Preheat oven 400.
Grease an 8 inch springform pan generously with Pam.
Stand up the rigatoni around and around in the pan until they fit comfy. (i used probably half the box)
Place a piece of cheese inside each noodle.
Pour on the 3 cups sauce.
Top with shredded mozzarella and some parmesan.
Bake covered for 15 mins on a foil lined cookie sheet.
Remove foil and bake an additional 15 mins or until browned on top.
Top with parsley, use a thin knife around the edge to help loosen the pasta.
Let cool a bit before removing sides.