To prepare a gourmet sweet potato souffle recipe, first you need to prepare the sweet potatoes. First, you'll need: Sweet potatoes - Peel and cut into small cubes. You can use any kind you like, but I like to use sweet, ripe, firm, and not mushy. If you don't want to peel them, just cut them in half lengthwise. Then, cut the flesh out of one of the halves and put it in the bowl of your food processor. Pulse the mixture until it's smooth and creamy. Add the remaining ingredients and mix until everything is evenly combined. Pour the batter into the prepared baking dish. Bake the souffle for 20 minutes at 375 degrees F. Remove the dish from the oven and let it cool for 5 minutes before serving.