1 lb. ground chuck
1 lg. onion, chopped
1 tbsp. butter
1 can tomato soup
1 can corn
1 bell pepper, chopped
1 med. size pkg. noodles, cooked
1 can mushrooms
1/2 lb. grated Cheddar cheese
3 tbsp. Worcestershire sauce

Brown meat and onion in butter; drain. Add remaining ingredients. Spray a large casserole with nonstick spray and spoon in meat mixture. Bake at 350 degrees for 40 minutes.