Crock-Pot Pizza Casserole - cooking recipe

Ingredients

1 lb. hamburger
1 onion, chopped
2 (16 oz.) cans pizza sauce
1 (10 oz.) pkg. Mozzarella cheese, grated
1 to 2 c. dry macaroni, cooked
8 oz. sliced pepperoni
1 can mushrooms (optional)

Preparation

Brown hamburger and onion in skillet, stirring frequently. Combine remaining ingredients in crock-pot, mixing well.
Cook on low for 3 hours or to desired consistency.