Crock-Pot Pizza - cooking recipe

Ingredients

2 lb. hamburger
1/3 large box rigatoni or spiral noodles, cooked as directed
1 1/2 jars Ragu chunky-style pizza sauce
1 large pkg. shredded Mozzarella cheese
1 pkg. sliced pepperoni
mushrooms (if desired)
salt and pepper
onion

Preparation

Fry hamburger and onion until browned (drain).
Make 3 layers in crock-pot of above items in order.
Put on low for 5 hours.