Prep the sweet potatoes: Cut the sweet potatoes into evenly sized ½-inch (1.25 cm) cubes or wedges. Tip: Cubes get crispier; wedges stay softer in the center.
Season: Add the sweet potatoes to a bowl and toss with the oil, salt, and any optional seasonings until evenly coated.
Air fry: Preheat the air fryer to 400°F (200°C). Add the sweet potatoes to the basket in a single layer (cook in batches if needed). Tip: Avoid overcrowding. Crowding causes steaming instead of crisping.
Cook: Air fry for 12–17 minutes, shaking the basket halfway through, until golden on the outside and tender when pierced with a fork.
