Scrub the sweet potatoes under running water to remove any dirt. Pat them completely dry with a clean kitchen towel — moisture can prevent the skin from crisping properly.

Use a fork to prick each potato 4–5 times all around. This helps steam escape while they cook. Rub them lightly with olive oil and sprinkle evenly with kosher salt.

Preheat your air fryer to 390°F (200°C) for about 3 minutes. Place the potatoes in the basket, making sure they’re not touching, and air fry for 35–40 minutes. Flip them halfway through to ensure even cooking.

They’re ready when you can easily pierce them with a fork and the skin feels crisp. If they’re still firm in the center, give them another 5 minutes. Larger potatoes may take closer to 45 minutes.

Let the sweet potatoes cool for a couple of minutes, then slice open and fluff with a fork. Top them however you like — butter, cinnamon, Greek yogurt, or even chili!