Preparation - Bake at 350° for about 1 hour, gently stirring a few times to distribute syrup so all are glazed. Syrup will thicken and color of sweet potatoes has become deeper. syrup is thickened . To save time and oven space when cooking a large holiday meal, prepare candied sweet potatoes the day before, then reheat in microwave oven before serving. Quick Skillet Method |