Line air fryer with foil or parchment paper. Spray with cooking spray
In a mixing bowl, add flour, baking powder, salt, and water. Mix until well combined
Dip each cookie into batter. Place into air fryer basket, ensuring cookies are not touching
Air fry at 400°F for 5 minutes. Flip and cook an additional 2 - 3 minutes
Optional: If batter spreads too thin, trim excess with knife or kitchen scissors
Using a sieve, sprinkle with powdered sugar