Preheat the Oven: Start by heating your oven to 425°F (220°C) with a baking sheet inside. Preheating the baking sheet will help achieve that desired crispiness when the fries are placed on it.
Prepare the Sweet Potatoes: Peel the sweet potatoes if desired. Then, cut them into uniform 1/4 inch thick fries to ensure even cooking.
Soak the Fries: Soak the fries in cold water for 30 minutes. This step is pivotal as it removes excess starch, aiding in achieving ultimate crispiness.
Season the Fries: After soaking, drain the fries and pat them dry with a paper towel. In a large bowl, toss the fries with 2 tablespoons of olive oil, 1 teaspoon of garlic powder, 1 teaspoon of paprika, 1 teaspoon of salt, ½ teaspoon of black pepper, and 1 tablespoon of cornstarch (if using). Ensure that all fries are evenly coated for the best flavor.
Bake the Fries: Carefully remove the hot baking sheet from the oven and spread the fries evenly onto it in a single layer. Bake for 25-30 minutes, flipping halfway through, until they are crispy and golden brown.
Check for Crispiness: After the baking time is up, check the fries for crispiness. If they aren’t quite there, pop them back into the oven for a few more minutes. Allow the fries to cool for a few minutes before enjoying!