Squash Casserole

1 large onion, chopped
4 T butter (1/2 stick butter)
3 C cooked squash, drained, all water squeezed out
1 C crushed Ritz crackers, plus additional for topping
1/2 C sour cream
dashes of salt, pepper and garlic powder
1 C grated cheddar cheese

Preheat oven to 350 degrees. Saute onion in butter for 5 minutes. Remove from pan and mix all ingredients together. Pour into buttered casserole dish and top with additional cracker crumbs. Bake for 30 minutes.

From The Lady and Sons Cookbook.