Preheat oven to 425 degrees F.
Bake sweet potatoes until soft, about 1 hour.
Remove from oven and allow to cool so you can handle potatoes.
Cut in half, lengthwise, and scoop insides into a large mixing bowl.
Add all remaining ingredients and blend well.
Using a whisk, mix until potatoes are evenly smooth, 1 to 2 minutes.
Add salt to taste and serve.
Yield: 8 servings.