To microwave potatoes, pierce potatoes with fork; microwave uncovered on High 7 to 9 minutes, turning potatoes over after 4 minutes, until tender. Let stand 5 minutes. Mash potatoes and fill shells as directed. Arrange stuffed potatoes in circle on 10-inch microwavable plate. Cover with microwavable waxed paper; microwave on High 2 to 3 minutes or until hot.