How To Cook Sweet Potato Fries In Oven. Drain and rinse the sweet potatoes, then blot with paper towels (they should still be a little damp). Instead of using a baking sheet, use a piece of heavy duty aluminum foil and make a little lip around the edges.
Instead of using a baking sheet, use a piece of heavy duty aluminum foil and make a little lip around the edges. Place sweet potato fries on a baking sheet. Drain and rinse the sweet potatoes, then blot with paper towels (they should still be a little damp).
Spread out on pan in an even layer so that they aren't touching.
Spread out on pan in an even layer so that they aren't touching. Bake in the preheated oven until golden, about 15 minutes. Line two baking sheets with foil and coat with cooking spray. So, leave space between them.