Preheat the oven to 450 degrees F.
Toss slices with oil, salt and cayenne pepper, spread out on a foil lined baking sheet and bake, turning once, until tender and lightly browned, about 20 minutes.
By Deeli from Richland, WA
This is the easiest way I've found to make sweet potato (or any other type of) fries. Preheat oven to 400 degrees F. Line a jelly roll pan with aluminum foil for easy clean up.