Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

Mixed Vegetable Casserole

Teresa Ambra

Mixed Vegetable Casserole is a comforting side dish that’s great to make up for company, potlucks, or holiday dinners. It’s fairly easy to put together and it has a sumptuous taste. You can use almost any kind of frozen veggie combinations.

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The original recipe called for canned mixed vegetables but I never buy those so I’ve always used frozen veggies instead. I’ve used lots of different combinations including stir-fry type frozen veggies and no matter the combination everything turns out great.

If you need to clean out your refrigerator this is a great recipe to do that with! If you need to use up garden produce, again, this is a great recipe to use up all that extra zucchini, tomatoes, squash, and any other veggies you need to use so they don’t go to waste. You almost can’t kill this recipe. Any combination of veggies will work. If you want to have a lively color add diced red pepper. Leeks, garlic, and mushrooms are other veggies you can include for a richer, fuller taste.

I got this recipe from Lynda Jackson, a coworker of mine when we both worked at Dallas Baptist University. She had been a pastor’s wife for years and she could sure cook! During the years I worked at Dallas Baptist trying to get my kids through college, Lynda was known as the premiere teacher for the Portfolio class where adult students could gain classroom credit for work experience.

In order to get credit for that class the student had to write petitions showing why they had sufficient “book knowledge” in a certain subject citing textbooks that actually covered a particular petition’s topic. In other words, to gain credit you had to prove you had learned the theory behind the textbooks in addition to simple work experience. Lynda gave me a lot of sage advice during the time I took the class.

I was one of the few students who achieved a full 33 credit hours taking the Portfolio class during the shortened summer term of 9 weeks (rather than 15). (Yes, I’m an over-achiever). 🙂 Even though Lynda wasn’t the teacher for my particular section, she provided a lot of counsel that helped me along the way to getting complete credit for each of my petitions. Taking that summer class provided enough credits as if I’d worked the whole year!

While we worked together at DBU, Lynda gave me several wonderful recipes and this is one of them. This Mixed Vegetable Casserole has lots of veggies in a creamy sauce of cheddar cheese, sour cream, and cream of celery soup. Then it’s topped with buttered Ritz cracker crumbs. It’s spectacular.

It’s also quick and easy. I don’t even bother to pre-cook the veggies. I just mix them with all the other ingredients and plop them into the casserole dish and bake. Voila! Out comes one of the most delicious casseroles you will ever eat!

When I initially posted this recipe in March 2013, I made it for someone I was taking a meal to. Since the casserole was baked in a foil pan, the light didn’t show it well. Plus, I was still using an iPhone for a camera so the pictures weren’t as sharp as I would have liked.

I recently remade this recipe (October 2016) for a potluck at our church where I was bringing several side dishes including Roasted Italian Tomatoes. I froze the leftovers and served them again about a month later. It’s truly a tasty and versatile casserole that’s an excellent choice for the holidays. I highly recommend it.

Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

Mixed Vegetable Casserole is a tasty recipe that’s great for holiday meals.

Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

Every mouthful is wonderful!

Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

I’ve used almost every combination of frozen veggies in this recipe so I can get a wide variety.

Here’s what I did.

Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

I used these ingredients.

Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

Place two 16-oz. bags of frozen veggies in a large mixing bowl. One was a mixed vegetable medley and the other was a stir-fry medley. Add cheese, cream of celery soup, onion,salt, pepper and sour cream.

Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

Stir all the ingredients together. Though the mixture seems a little dry, the cheese and cream of celery soup make the casserole really nice and creamy while baking.

Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

Pour into a large 9×13″ glass baking dish.

Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

To make topping: Melt butter in 2 cup measuring cup. Crush Ritz crackers in your hands and add to melted butter. Stir to combine.

Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

Sprinkle crumbs over top of the Mixed Vegetable Casserole.

Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

Bake at 350 for 45 minutes to an hour or until cooked through. Cover with foil if crackers start to get too brown.

Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

Yes, we ate the Mixed Vegetable Casserole down to the last crumb!

Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

This delightful casserole is also a great way to use up a lot of leftover veggies.

Here’s the recipe.

MIXED VEGETABLE CASSEROLE

(Recipe adapted from Lynda Jackson, when we worked at Dallas Baptist University)

Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

Mixed Vegetable Casserole

Teresa Ambra
Mixed Vegetable Casserole is outstanding! This tasty vegetable casserole is great for holiday entertaining and company dinners. Any kind of veggie combination can be used, including fresh veggies and leftovers! It's also a great way to get your kids to enjoy their vegetables!
3.77 from 93 votes
Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Course Veggie/Casserole/Side Dish
Cuisine American
Servings 12
Calories 164 kcal

Equipment

  • 1 9x13" glass baking dish
  • 1 large mixing bowl
  • 1 wooden spoon
  • measuring cups
  • measuring spoons
  • 1 Rolling Pin to crush Ritz crackers (or just crush in your hands)
  • 1 zip lock bag WITHOUT the "stand and fill" bottom to crush crackers
  • 1 sharp knife to dice vegetables

Ingredients
  

  • 16 oz. pkg. frozen mixed vegetables
  • 16 oz. pkg. frozen sugar snap pea stir fry mix vegetables or any blend of veggies will do
  • 1 cup Colby Jack cheese shredded, sharp cheddar cheese will work
  • 1 can cream of celery soup
  • 2/3 cup sour cream
  • 1 small onion diced
  • 1 tsp. sea salt or kosher salt
  • 1/2 tsp. ground black pepper
  • 1/2 stick unsalted butter melted (1/4 cup)
  • 1 sleeve Ritz crackers crushed (see note below)

Instructions
 

  • Place vegetables, cheese, soup, sour cream, onion, salt and pepper in a large mixing bowl.
  • Stir ingredients to combine and mix well.
  • Spray 9x13” casserole dish with cooking spray.
  • Spread vegetables in casserole.
  • Melt butter in large pyrex measuring cup.
  • Add crushed crackers.
  • Stir to combine.
  • Sprinkle cracker crumbs over top of casserole.
  • Bake at 350° for about 45-60 minutes or until vegetables are cooked through.

Notes

NOTE: Any kind of vegetable assortments will work for this recipe, including fresh veggies or leftovers!
 
NOTE: Ritz crackers has reduced the amount of their boxes from 16 ounces to 13 ounces. You may need to use 1 1/3 sleeves of crackers to get the same amount as the original recipe.
 
NOTE: Even though this mixture seems dry before you make it, avoid the temptation of adding milk or other ingredients to make it creamier. The cheese melts with the soup and the texture becomes deliciously creamy while baking.
 
© Can’t Stay Out of the Kitchen

Nutrition

Calories: 164kcalCarbohydrates: 11gProtein: 6gFat: 11gSaturated Fat: 6gPolyunsaturated Fat: 1gMonounsaturated Fat: 3gTrans Fat: 0.2gCholesterol: 31mgSodium: 382mgPotassium: 223mgFiber: 3gSugar: 3gVitamin A: 2710IUVitamin C: 27mgCalcium: 126mgIron: 1mg
Keyword casserole, mixed vegetables, side dish
Tried this recipe?Let us know how it was!

 

[b]Mixed Vegetable Casserole[/b]
Recipe Type: Veggie/Casserole/Side Dish
Cuisine: American
Author: Teresa Ambra adapted from Lynda Jackson, when we worked together at Dallas Baptist University, Dallas, TX
Prep time:
Cook time:
Total time:
Serves: 12
Tasty vegetable casserole that’s great for holiday entertaining. Any kind of veggie combination can be used, including fresh veggies and leftovers!
Ingredients
  • 16-oz. frozen mixed vegetables
  • 16-oz. frozen western fiesta mix vegetables (any kind will do)
  • 1 cup shredded Colby Jack cheese (sharp cheddar cheese will work)
  • 1 can cream of celery soup
  • 2/3 cup [url href=”http://www.chobani.com/” target=”_blank” title=”chobani”]Chobani[/url] plain Greek yogurt or sour cream
  • 1 small onion, diced
  • 1 tsp. kosher salt
  • ½ tsp. pepper
  • ½ stick melted butter
  • 1 sleeve Ritz crackers, crushed
Instructions
  1. Place vegetables, cheese, soup, yogurt, onion, salt and pepper in a large mixing bowl.
  2. Stir ingredients to combine and mix well.
  3. Spray 9×13” casserole dish with cooking spray.
  4. Spread vegetables in casserole.
  5. Melt butter in large pyrex measuring cup.
  6. Add crushed crackers.
  7. Stir to combine.
  8. Sprinkle cracker crumbs over top of casserole.
  9. Bake at 350° for about 45-60 minutes or until vegetables are cooked through.
Notes
Any kind of vegetable assortments will work for this recipe, including fresh veggies or leftovers!
Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

Here’s a close up so you can see the texture of this soothing, comforting side dish.

Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

Mixed Vegetable Casserole is not only quick and easy to make, it tastes great too. Use any kind of frozen vegetable or you can use up leftover veggies in your refrigerator! So versatile.

You may also enjoy these delicious recipes!

Fresh Summer Veggie Bake

Fresh Summer Veggie Bake | Can't Stay Out of the Kitchen | this delicious #vegetable Tian is incredibly tasty & easy to make. It's also healthy, low calorie & #glutenfree. #zucchini #tomatoes #parmesancheese

Slow Roasted Summer Vegetables

Slow Roasted Summer Vegetables | Can't Stay Out of the Kitchen | you've never had #veggies that taste as wonderful as the way these do. Slow roasting and assorted herbs make these garden vegetables incredibly tasty. #vegan #glutenfree #eggplant #tomatoes #zucchini

Broccoli, Cauliflower, Carrots and Cheese  

Broccoli, Cauliflower, Carrots and Cheese | Can't Stay Out of the Kitchen | this delicious #side dish is super quick & easy to make. It's the perfect #casserole for #FathersDay & other #holiday dinners. #broccoli #cauliflower #carrots
Mixed Vegetable Casserole | Can't Stay Out of the Kitchen | this is a scrumptious & versatile #casserole that's a great side dish for #holiday menus. This one uses a #RitzCrackers crumb topping. #vegetables

Mixed Vegetable Casserole

Teresa Ambra
Mixed Vegetable Casserole is outstanding! This tasty vegetable casserole is great for holiday entertaining and company dinners. Any kind of veggie combination can be used, including fresh veggies and leftovers! It's also a great way to get your kids to enjoy their vegetables!
3.77 from 93 votes
Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Course Veggie/Casserole/Side Dish
Cuisine American
Servings 12
Calories 164 kcal

Equipment

  • 1 9×13" glass baking dish
  • 1 large mixing bowl
  • 1 wooden spoon
  • measuring cups
  • measuring spoons
  • 1 Rolling Pin to crush Ritz crackers (or just crush in your hands)
  • 1 zip lock bag WITHOUT the "stand and fill" bottom to crush crackers
  • 1 sharp knife to dice vegetables

Ingredients
  

  • 16 oz. pkg. frozen mixed vegetables
  • 16 oz. pkg. frozen sugar snap pea stir fry mix vegetables or any blend of veggies will do
  • 1 cup Colby Jack cheese shredded, sharp cheddar cheese will work
  • 1 can cream of celery soup
  • 2/3 cup sour cream
  • 1 small onion diced
  • 1 tsp. sea salt or kosher salt
  • 1/2 tsp. ground black pepper
  • 1/2 stick unsalted butter melted (1/4 cup)
  • 1 sleeve Ritz crackers crushed (see note below)

Instructions
 

  • Place vegetables, cheese, soup, sour cream, onion, salt and pepper in a large mixing bowl.
  • Stir ingredients to combine and mix well.
  • Spray 9×13” casserole dish with cooking spray.
  • Spread vegetables in casserole.
  • Melt butter in large pyrex measuring cup.
  • Add crushed crackers.
  • Stir to combine.
  • Sprinkle cracker crumbs over top of casserole.
  • Bake at 350° for about 45-60 minutes or until vegetables are cooked through.

Notes

NOTE: Any kind of vegetable assortments will work for this recipe, including fresh veggies or leftovers!
 
NOTE: Ritz crackers has reduced the amount of their boxes from 16 ounces to 13 ounces. You may need to use 1 1/3 sleeves of crackers to get the same amount as the original recipe.
 
NOTE: Even though this mixture seems dry before you make it, avoid the temptation of adding milk or other ingredients to make it creamier. The cheese melts with the soup and the texture becomes deliciously creamy while baking.
 
© Can’t Stay Out of the Kitchen

Nutrition

Calories: 164kcalCarbohydrates: 11gProtein: 6gFat: 11gSaturated Fat: 6gPolyunsaturated Fat: 1gMonounsaturated Fat: 3gTrans Fat: 0.2gCholesterol: 31mgSodium: 382mgPotassium: 223mgFiber: 3gSugar: 3gVitamin A: 2710IUVitamin C: 27mgCalcium: 126mgIron: 1mg
Keyword casserole, mixed vegetables, side dish
Tried this recipe?Let us know how it was!
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34 Comments

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    December 2, 2024 at 1:22 pm

    […] “Veggie Fiesta”: This vibrant casserole is a celebration of vegetables! It’s packed with flavor and provides a good source of vitamins and antioxidants with eggs, bell peppers, onion, mushrooms, spinach, zucchini, Italian seasoning, and garlic. Simply sauté the vegetables, whisk the eggs, combine everything, and bake. […]

  • Donna DiZebba

    January 9, 2023 at 2:17 pm

    This vegetable casserole is definitely a winner! Easy to put together and vegs don’t need to be precooked. My son-in-law is not a fan of vegetables but he had 3 helpings of this casserole!!! My whole family loved it!!

    1. Teresa

      January 10, 2023 at 10:26 am

      Hi Donna. I’m thrilled that everyone loved this tasty casserole. Thanks for stopping by and letting me know!

      1. Denise Wilson

        September 10, 2024 at 8:37 pm

        5 stars
        I love it. Got so tired of steamed, and stir fried vegetables. I put some cut up rotisserie chicken in it also. Substituted seasoned bread crumbs for crackers, and ate this casserole for a week. Loving it

        1. Teresa Ambra

          September 11, 2024 at 9:00 pm

          Hi Denise. So glad you are enjoying the recipe. It’s great for holidays too. 🙂

  • Susan

    March 25, 2022 at 6:20 am

    I had a similar recipe but lost it. The only differences between that one and this one is, shredded cheese is placed on top of the vegetable mix and two cans of cream of (your choice) soups are used. Thank you for the recipe. It makes a great side dish or complete meal if meat is added!

    1. Teresa

      March 25, 2022 at 12:53 pm

      So glad you found the recipe again, Susan! I know what it’s like losing treasured recipes. Enjoy.

  • Tracy

    March 18, 2022 at 8:19 am

    Can you use fresh zucchini in this recipe?

    1. Teresa

      March 18, 2022 at 9:49 am

      Hi Tracy. The only problem with zucchini is that when it cooks down it has a tendency to get slimy and will cause the casserole to get too juicy. I, personally, wouldn’t add it.

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    November 23, 2020 at 2:31 pm

    […] – My Shrimp in Spicy Garlic Dipping Sauce from Flour on My Face with Mixed Vegetable Casserole from Can’t Stay Out of the […]

    1. Barbara

      January 31, 2022 at 6:09 pm

      Thank you for this recipe; with food being so expensive, I bought many vegetable packets on sale and now can use them in a very healthy dish. Never would have thought of it..

      1. Teresa

        January 31, 2022 at 8:28 pm

        Hi Barbara, Hope you enjoy it.

  • Cora

    April 29, 2020 at 7:30 am

    Love this recipe and have one change. I add shredded chicken to make it a complete meal. Serve with mashed potatoes (instant!😂😂) and fruit.

    1. Teresa

      April 29, 2020 at 3:07 pm

      Hi, Cora. I bet that’s one fantastic meal! Such terrific ideas. Thanks for sharing.

  • Geneva Vanderhorst

    January 26, 2020 at 11:48 am

    Can I use cream of chicken instead of cream of celery? Also club crackers instead of Ritz? Trying to complete a ‘no spend’ and shelf-cooking challenge. One of my childhood neighbors made this when I came home from college and included water chestnuts, which I have. I want to do this for meal planning this week. How long will it last in the fridge? Ideas for freezing? I’m single but don’t want to waste. Thanks!

    1. Teresa

      January 27, 2020 at 8:13 am

      Hi, Geneva. Yes, you can substitute the things you have on hand. But if you ever get a chance to make it with cream of celery it does have a wonderful taste. I would freeze leftovers and then heat them up later. It will last a week or so in the refrigerator after baking.

  • Amy Wolfington

    November 26, 2019 at 8:12 am

    Can this be made a day ahead? If so, would you wait to add topping? Thanks!

    1. Teresa

      November 26, 2019 at 2:20 pm

      Hi, Amy. I’ve actually made up the casserole but not baked it before the next day. (Yes, I would wait to add the topping right before baking.) I don’t know if I would bake it ahead and then reheat it. I think that would overcook the veggies.

  • Dorothea Joslin

    October 30, 2019 at 9:27 pm

    How would I convert this recipe for the slow cooker or crock pot?

    1. Teresa

      October 31, 2019 at 7:38 am

      Hi, Dorothea. I would do it this way: Mix the ingredients as recommended and put into a crockpot that’s been sprayed with cooking spray. Cook on a high heat for about 2 to 3 hours. It should be bubbly but not boiling. Add the topping and heat through. That part will probably take about 20 to 30 minutes. Then change heat setting to “keep warm” until needed to serve.

  • Bev

    March 14, 2019 at 7:51 pm

    Did you add water to the cream of celery soup before adding it to the mixture?

    1. Teresa

      March 16, 2019 at 8:46 am

      Hi, Bev. No water added.

      1. Linda Taylor

        July 8, 2020 at 10:27 am

        I made this for family night at church and it was a big hit. My family likes it and ask for me to cook often. My husband does not like cheese so I use pepper jack and he doesn’t realize it has cheese and is great in the casserole.

        1. Teresa

          July 8, 2020 at 3:10 pm

          Hi, Linda. So glad you enjoyed this tasty recipe. It’s great as a side for holidays too.

  • Karen

    November 18, 2018 at 1:17 pm

    Delicious and so easy. Used Panko breadcrumbs instead of crackers. Husband loved it.

    1. Teresa

      November 18, 2018 at 6:46 pm

      Hi, Karen. So glad you and hubby loved this easy recipe. We’ve always enjoyed it too. I think Panko crumbs would make it perfect!

  • J Tyree

    October 6, 2018 at 6:46 pm

    Very good casserole. I used a 2 lb bag of frozen mixed vegetables. Turned out great

    1. Teresa

      October 7, 2018 at 7:29 am

      I’m so glad to hear you enjoyed the casserole. It’s always been one of our favorites. Thanks for letting me know. Have a great week.

  • Jody Campbell

    April 27, 2018 at 3:28 pm

    I’m blessed to be helped from food shelter’s and had too many canned mixed vegetables. This recipe was perfect. Thank you. It brought me home to my Virginia church cook books.

    1. Teresa

      April 28, 2018 at 9:20 am

      So glad you like it Jody. It’s great for family gatherings and holidays. Thanks for letting me know.

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  • Sandra

    September 16, 2013 at 12:19 am

    Loved this, I only made two slight changes. I used soya sauce in place of the salt and “Durkee’s” french fried onions(the kind you use in green bean casserole). My frozen veg of choice was whole green beans, wax beans and carrots. Definitely a keeper, thank you.

    1. Teresa

      September 16, 2013 at 10:43 am

      So glad you enjoyed it. Thanks for letting me know.

3.77 from 93 votes (92 ratings without comment)

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