01 - Cut the sweet potatoes into evenly sized 1/4-inch thick fries.
02 - Place the fries in a large bowl and cover with cold water. Soak for 30 minutes for extra crispiness, then drain and pat dry thoroughly with paper towels.
03 - In a large bowl, toss the fries with olive oil to coat. Sprinkle with cornstarch, smoked paprika, garlic powder, salt, and pepper. Toss until fries are evenly coated.
04 - Preheat the air fryer to 400°F for 3 minutes.
05 - Arrange fries in a single layer in the air fryer basket, working in batches if necessary.
06 - Air fry for 15-18 minutes, shaking the basket halfway through, until fries are golden and crispy.
07 - Serve immediately, garnished with extra salt if desired.