Creating crispy oven-baked sweet potato fries is a straightforward process. Follow these steps for a delicious result:

1. Preheat Oven: Preheat your oven to 425°F (220°C) and line a baking sheet with parchment paper.
2. Prepare Sweet Potatoes: Peel the sweet potatoes and cut them into thin, even fries. Aim for about ¼ inch in thickness for the best texture.
3. Soak (Optional): Soak the cut fries in cold water for 30 minutes. This step helps remove excess starch and enhances crispiness.
4. Dry Fries: Drain and pat the fries dry using a clean kitchen towel or paper towels.
5. Season Fries: In a large bowl, combine the fries with olive oil, paprika, garlic powder, onion powder, cayenne pepper (if using), salt, and black pepper. Toss until evenly coated.
6. Add Cornstarch (Optional): For extra crispiness, sprinkle the cornstarch over the fries and toss again to coat.
7. Arrange on Baking Sheet: Spread the fries in a single layer on the prepared baking sheet, ensuring they are not overcrowded.
8. Bake: Place the baking sheet in the preheated oven and bake for 30-35 minutes, flipping the fries halfway through for even cooking.
9. Check for Crispiness: Keep an eye on them in the last few minutes; they should be golden brown and crispy.
10. Cool Slightly: Remove from the oven and allow the fries to cool for a few minutes before serving.

By following these simple steps, you’ll be rewarded with incredibly crispy and flavorful sweet potato fries in no time!