1 lb. ground beef
1 med. onion, chopped
1 1/2 lb. cooked zucchini
1/2 lb. grated cheese
1 can cream of mushroom soup
Cracker crumbs

Saute onion and beef together in skillet. Season to taste. Arrange cooked zucchini, sliced, with meat mixture and grated cheese in alternate layers in casserole. Pour mushroom soup over top and top with cracker crumbs. Bake at 350 degrees for 1 hour. May be prepared a day ahead and reheated at 350 degrees for 45 minutes. It usually tastes better reheated.