01 - Preheat the oven to 425°F. Line two baking sheets with parchment paper.
02 - Slice sweet potatoes into uniform sticks about 1/4 inch thick.
03 - Optionally soak the cut fries in cold water for 30 minutes to enhance crispiness, then drain and pat dry thoroughly.
04 - Place fries in a large bowl, sprinkle with cornstarch, and toss to coat evenly.
05 - Drizzle olive oil over fries, add smoked paprika, garlic powder, sea salt, and black pepper. Toss until fully coated.
06 - Spread fries in a single layer on prepared baking sheets, ensuring no fries touch to allow even crisping.
07 - Bake fries for 15 minutes at 425°F.
08 - Flip fries and rotate baking sheets, then bake an additional 12 to 15 minutes until edges are golden and crisp.
09 - Remove from oven; sprinkle with additional sea salt and chopped parsley if desired. Serve immediately while hot.