Preheat oven to 350 degrees.
In a large Dutch oven over medium heat, add two tablespoons avocado oil.
Add beef strips and season with salt and pepper, if desired.
Stir fry beef until it is no longer pink.
Add two cups of beef broth.
Cover with lid; turn heat to low and simmer about 1 hour 30 minutes, or until beef is tender.
Broth will probably cook down most of the way.
Add additional water to avoid sticking, if necessary.
Meanwhile, boil egg noodles to al dente.
Drain.
Drizzle remaining tablespoon of avocado oil over noodles and stir well to prevent the noodles from sticking together.
To the beef in Dutch oven: add frozen mixed vegetables, consommé, golden mushroom soup, French onion soup, salt, pepper, garlic powder, Italian seasoning and thyme.
(I added pepper but no salt, since the soups have a lot of sodium already).
When noodles are done, add drained noodles to ingredients in Dutch oven.
Grease a 9x13” glass baking dish.
Pour beef and noodle mixture into prepared baking dish.
Sprinkle very lightly with additional Italian seasoning and thyme.
Cover with foil.
Bake 30-45 minutes or until casserole is heated through and bubbly around the outsides of the dish.