1 1/2 lb. hamburger, browned and drained
2 large Mozzarella cheese
1 chopped onion
2 pkg. pepperoni
1 box rigatoni noodles, cooked
1 can cream of mushroom soup (do not dilute)
2 cans pizza sauce

Alternate layers, ending with cheese on top. Heat in pot for 4 to 5 hours on low heat.