Rigatoni Hot Dish

1 (10.5 ounce) can pizza sauce
1 box rigatoni noodles, cooked
1 large can tomato sauce
1 cup milk
1 pound browned hamburger
1 package mozzerella cheese
chopped onion to taste, about ¼ cup
1 stick of pepperoni, sliced

Mix ingredients and bake at 350° for 1 hour.