01 - Preheat the oven to 425°F. Line two large baking sheets with parchment paper.
02 - Cut the sweet potatoes into ⅜-inch thick sticks, ensuring uniform size for even baking.
03 - Place the sliced fries in a large bowl of cold water and soak for 30 minutes to enhance crispiness. Drain and pat completely dry with a clean towel.
04 - Toss the dried sweet potato sticks with cornstarch until evenly coated. Add olive oil, smoked paprika, garlic powder, sea salt, and black pepper; toss again to combine thoroughly.
05 - Spread the fries in a single layer on the prepared baking sheets, making sure they do not overlap.
06 - Bake for 15 minutes, then flip the fries and rotate the trays to ensure even cooking. Continue baking for another 15 minutes or until golden and crispy.
07 - Remove from the oven and let the fries rest for 5 minutes. Sprinkle with additional sea salt if desired and serve immediately.