Baked sweet potatoes can be grilled by themselves or baked by themselves. Don't buy them outside. The waste chemical barrels used to roast sweet potatoes outside do not know how much pollution.
Brush the sweet potato and place it on a baking tray covered with tin foil. Bake into the middle layer of the oven and bake at 200 degrees for 60-90 minutes. Bake until the sweet potato oozes out the juice.
Sweet potatoes are roasted whole. Of course, the more the number of baked, the more cost-effective, the temperature time is the same. Do not wrap the sweet potato in tin foil and lay it underneath. The edge of the tin foil can be slightly twisted to prevent the juice from flowing out.