baked-sweet-potato Published July 27, 2012 at 640 × 480 in Sweet Potato Pancake Bake your sweet potato at 325F for 40 to 60 minutes or until soft. Remember to fork the sweet potato skin before cooking to avoid explosions. Bake your sweet potato at 325F for 40 to 60 minutes or until soft. Remember to fork the sweet potato skin before cooking to avoid explosions.