how to bake sweet potatoes in oven in foil
Directions. 1  Heat oven to 400Â° F. Pierce each sweet potato several times with the tines of a fork. 2  Place the sweet potatoes on a rimmed baking sheet lined with foil. 3  Bake until tender, about 45 minutes. 4  Make a slit in the top of each sweet potato. 5  Top with 1 tablespoon of butter and season with the salt and pepper.