Cook ziti in two Dutch ovens according to pkg. directions until tender, about 20 minutes, then drain well. Add enough sauce to moisten. Cook to blend flavors and add spices. Place ziti in large foil turkey-roasting pan in layers with Ricotta cheese, sauce, and a bit of cheddar cheese. Repeat, ending with a layer of sauce on top. Sprinkle most of the cheddar cheese over the top. Some people add a bit more sauce at the end. You can choose which you prefer. Bake at 350 degrees for 45 minutes, until cheese is bubbly.