01 - Set oven temperature to 425°F. Prepare two large baking sheets by lining them with parchment paper.
02 - Slice sweet potatoes into sticks approximately 3/8 inch thick to ensure even cooking.
03 - Place cut fries in a large bowl. Sprinkle with cornstarch and toss thoroughly to achieve an even coating.
04 - Drizzle olive oil over coated fries. Season with sea salt, black pepper, and smoked paprika if desired. Toss again to distribute evenly.
05 - Spread fries in a single layer on prepared baking sheets, ensuring they do not overlap or touch to promote crispness.
06 - Bake for 15 minutes at 425°F.
07 - Carefully flip fries and switch the position of the baking sheets for even roasting.
08 - Continue baking for an additional 12 to 15 minutes until fries are golden and crisp.
09 - Remove fries from oven. Sprinkle with extra sea salt and serve immediately while hot.