Place frozen shells into a casserole or baking dish. Add your favorite pasta sauce. Cover and bake for 50-60 minutes in a preheated 350 degree oven. If desired, sprinkle with grated cheese during final 10 minutes of baking. If thawed prior to baking, reduce oven time to 20-30 minutes. To Microwave: Place frozen shells in microwavable safe dish, spread with pasta sauce and cover. Microwave on high for 15 minutes. Stir to combine the sauce and the shells after the first 7 minutes of cooking time and resume cooking.
