1 c. shredded sharp Cheddar cheese
1 can undiluted cream of onion soup
1 sm. carton sour cream
2 eggs
Cooked squash to fill casserole dish (yellow summer squash)

Boil onion with squash (yellow summer). Drain. Mix all ingredients together. Top with Ritz crackers, crushed. Bake 350 degrees 1 hour.