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
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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.