Pizza Casserole - cooking recipe

Ingredients

1 1/2 lb. ground beef
1 large jar spaghetti sauce
1 onion, chopped
6 oz. shredded Mozzarella cheese
1 (8 oz.) pkg. twist macaroni, cooked and drained
1 (3 1/2 oz.) pkg. sliced pepperoni

Preparation

Saute onion; add beef and brown.
Add sauce.
Combine beef mixture and cooked macaroni.
In a large casserole dish, layer macaroni mixture, then cheese, then pepperoni.
Repeat.
Bake at 375\u00b0 for 20 minutes.