I don't like baked sweet potatoes but love sweet potato fries and LOVE this recipe for sweet potatoes:
Start like Meliffy recommended but I cut my sweet potatoes into cubes and toss them with olive oil. After they are roasted (I like to corners to get a little charred), toss them with lime juice, cayenne pepper, a little more olive oil, coarse salt and cilantro - YUMMY!! The olive oil does add some fat but it is healthy fat.
Lisa