MICROWAVE: The quickest and easiest way to reheat individual portions of this dessert is on a heat-safe plate in the microwave. Heat in 25-second intervals until the desired warmth is reached. OVEN: Preheat oven to 350°F. Transfer desired quantity to a small baker. Heat the cold rolls for 12 minutes, or until they're warm all the way through. Cool the peach dumplings for 3 to 5 minutes before serving.