Cheesy Squash Casserole is one of those vintage recipes where you can’t get enough! This tasty casserole includes zucchini, yellow squash, celery and cheese in the main portion. It’s topped with a mouthwatering Ritz cracker crumble that includes cheddar cheese. Every bite is irresistible and so wonderful for family, company or holiday dinners like Thanksgiving or Christmas. It you enjoy squash, you’ll love this easy side dish.