Put a pkg of frozen tortellini (no need to cook first or even thaw) in a 9x13 pan.
Add 1 cup of water and a jar of your favorite spaghetti sauce to the tortellini and stir well. Drop spoonfuls of your favorite Alfredo sauce on top of that then cover with 2 cups shredded mozzarella cheese.
Cover tightly and bake at 350 for 1 hour. Uncover and bake for 10 more minutes.