If baking your potato, preheat the oven to 350° and stab your sweet potato a few times with a fork to aid in cooking. Put one or more sweet potatoes, whole, unpeeled, in the oven on a baking sheet or dish. Cook until soft, 30-45 minutes depending on the size and shape of the potato.
Or, use your preferred alternative method for cooking them (boiling, pressure cooking, microwaving)
Remove the potato from the skins and mix with a dash of cinnamon and 1/4 cup of milk.