Preheat the oven to 350 degrees.
Place all the whole sweet potatoes on a cookie sheet.
Roast for 45-60 minutes; they will be done when they are soft when pressed with the back of a fork.
When done, let potatoes cool enough for you to touch them.
Slice the skin down one side and squeeze the potato into the food processor; throw away skins.
Add all the remaining ingredients. Puree until thick and fluffy.
Serve!