1 1/2 lb. hamburger, browned and drained
8 oz. rigatoni, cooked
1 lb. pepperoni
1 1/2 lb. Mozzarella cheese, grated
1 onion, diced
1 can mushroom soup
15 1/2 oz. can pizza sauce

Layer in crockpot and heat for 2 - 3 hours. You can add mushrooms if you like.