Expert Tip: The easiest and quickest way to cook your sweet potato is to microwave it. I clean the sweet potato and then using a fork, poke holes into it. Microwave for 3-7 minutes depending on the size until the sweet potato is fork tender. Let cool and remove the skin.Storage: Once your sweet potato muffins have cooled completely, store them in an airtight container. They can be kept at room temperature for up to 3 days, preserving their flavor and texture.Freeze: If you want to store your ...