Prep your potatoes. Peel and slice sweet potatoes into even ¼-inch sticks — uniform cuts mean even cooking, so don't skip this step!

Soak and dry. Soak fries in cold water for 20–30 minutes, then pat completely dry with paper towels. This pulls out excess starch and is the key to crispiness.

Season them up. Toss the dried fries in a large bowl with olive oil, cornstarch, garlic powder, smoked paprika, onion powder, salt, and pepper until fully coated.

Arrange in the air fryer. Place fries in a single layer in your air fryer basket. Don't crowd them — work in batches if needed.

Air fry. Cook at 400°F (200°C) for 18–20 minutes, shaking the basket halfway through, until golden and crispy on the edges.

Serve immediately. These are best fresh out of the fryer while they're still crackling!