2 cups yellow squash, boiled and mashed
2 cups saltine crackers, crushed
2 cups sharp cheddar cheese, grated
2 eggs, beaten
1 (5 oz) can evaporated milk
1 large onion, chopped finely
salt and pepper to taste

Mix all ingredients, pour into greased casserole dish and bake 35-45 minutes at 350°F.