Set your oven to 425°F (220°C). A hot oven is key to achieving crispy fries.
Wash the white sweet potatoes.
Cut them into evenly sized sticks, about ¼ to ½ inch thick. Uniform sizing ensures even cooking.
Place the cut fries in a bowl of cold water and soak for 30 minutes. This step removes excess starch, helping the fries crisp up in the oven.
After soaking, drain and pat the fries completely dry with a clean kitchen towel.
In a large mixing bowl, toss the dried fries with olive oil, ensuring they are evenly coated.
In a separate small bowl, mix the cornstarch, garlic powder, smoked paprika, black pepper, and salt.
Sprinkle the seasoning mix over the fries and toss until all pieces are well coated.
Line a baking sheet with parchment paper or a silicone baking mat to prevent sticking.
Spread the fries in a single layer, ensuring they don’t overlap. Crowding the pan can lead to soggy fries.
Place the baking sheet in the preheated oven. Bake them for 40 minutes.
Bake for 15 minutes, then flip the fries using a spatula.
Bake for an additional 15-20 minutes, or until golden brown and crispy. Keep an eye on them during the last few minutes to prevent burning.
Remove the fries from the oven and let them cool slightly.
Garnish with fresh parsley or cilantro if desired.
Serve with your favorite dipping sauces, such as garlic aioli, spicy mayo, or ketchup.