Wash and Prepare the Sweet Potatoes: Scrub the sweet potatoes under running water and pat them completely dry. You can leave the skin on for extra texture or peel them if preferred.
Cut into Wedges: Slice each sweet potato in half lengthwise, then cut each half into evenly sized wedges. Aim for wedges about ½ to ¾ inch thick so they cook at a similar rate.
Remove Excess Moisture: Pat the cut wedges dry with a clean kitchen towel. Removing surface moisture helps them develop better browning during air frying.
Season the Wedges: Place the wedges in a large mixing bowl. Add olive oil, cornstarch, garlic powder, smoked paprika, onion powder, black pepper, and salt. Toss until all the pieces are evenly coated.
Preheat the Air Fryer: Preheat the air fryer to 380°F for about 3 minutes, if your model requires preheating. Lightly grease the basket with cooking spray.
Arrange the Wedges: Place the seasoned wedges in a single layer in the air fryer basket, leaving space between them. Avoid overcrowding and cook in batches if needed.
Air Fry Until Crispy: Cook at 380°F for 18–20 minutes, turning the wedges halfway through. Check for golden edges and a tender center by piercing one with a fork. Add a few extra minutes if the wedges are thick.
Garnish and Serve: Carefully transfer the cooked wedges to a serving plate. Sprinkle with fresh parsley if desired and serve immediately with your favorite dipping sauce.