1 lb. hamburger
1 med. onion, chopped
1 bell pepper, chopped
1 (16 oz.) jar pizza sauce
1 (7 oz.) pkg. macaroni, cooked
4 oz. pepperoni
1 jar mushrooms
Mozzarella cheese

Brown meat with onion and pepper, add macaroni, mushrooms and sauce. Pour in a casserole dish, layer pepperoni on top, then grated cheese. Bake 30 minutes at 350 degrees.