Core apple, and cut it into half-moon slices about 1/4-inch thick.

Sprinkle with cinnamon and salt.

Spray air fryer basket with non-stick spray.

Add apple slices in a single layer. (Save remaining slices for a second batch.)

Set air fryer to 400˚F /200˚C.

Cook until golden brown, 8 – 12 minutes, flipping slices halfway through. Repeat with any remaining apple.