Crock-Pot Pizza - cooking recipe

Ingredients

1 1/2 lb. hamburger, browned
2/3 box rigatoni noodles, cooked
2 (15 1/2 oz.) cans natural pizza sauce
1 small can mushrooms
1 medium onion, diced
1 pkg. pepperoni
2 large pkg. Mozzarella cheese

Preparation

Brown hamburger and onion until no longer pink.
Cook noodles according to directions.
Drain.
Alternate layers in order given and cook for 5 hours on low in 4-quart crock-pot.