Prepare as above. Spoon 3-cup portions of the spaghetti sauce into freezer containers. Cover. Freeze for up to 3 months. Before serving, place one portion of the spaghetti sauce into a microwave-safe container. Microwave, loosely covered, on 50% power (medium) for 5 minutes. Stir sauce, breaking up any frozen chunks. Microwave, loosely covered, on 100% power (high) for 3 to 5 minutes more or until heated through, stirring every minute. Serve as above.