1 pkg. rigatoni noodles
1 lb. sausage
1 onion, chopped
1 (14 oz.) jar Ragu
1 pkg. sliced pepperoni
1 pkg. grated Mozzarella cheese

Cook 1 package rigatoni noodles as directed. In skillet brown sausage and chopped onion. Add Ragu and simmer briefly. Add sliced pepperoni. Add rigatoni noodles and turn into a baking dish. Top with 1 package grated Mozzarella cheese. Bake until bubbly.