1 box extra thin spaghetti
1 lb. ground beef
1 pkg. sharp grated cheese, med. size pkg.
1 sm. onion, chopped
1 can Chef Boy-ar-dee spaghetti sauce (med. size), with mushrooms
1 can Chef Boy-ar-dee spaghetti sauce (med. size), with meat

Cook spaghetti and drain. Mix all ingredients except spaghetti sauce with meat; put in casserole. Spoon spaghetti sauce with meat on top. Cover with tin foil. Bake at 400 degrees about 15 minutes; until it bubbles.