01 - Preheat oven to 425°F. Line two large baking sheets with parchment paper.
02 - Place the cut sweet potato fries in a large bowl. If using, sprinkle with cornstarch and toss to coat lightly and evenly.
03 - Drizzle olive oil over the fries and toss. Add smoked paprika, garlic powder, salt, pepper, and cayenne if using. Stir until all fries are evenly coated.
04 - Arrange the fries in a single layer on the prepared baking sheets, making sure they are not touching for maximum crispiness.
05 - Bake for 15 minutes, then flip all fries over using a spatula. Rotate the pans and bake for another 10–15 minutes, or until fries are crispy and golden.
06 - Sprinkle with additional salt if desired. Serve hot as a snack or side dish.