In a medium bowl, combine the milk, melted butter, egg, vanilla extract, and salt. Whisk until smooth. Slowly add the pancake mix and stir until you have a thick, smooth batter.

Preheat your air fryer to 375°F. Line the air fryer basket with parchment paper and lightly spray with cooking spray.

Dip each cookie into the batter so it is fully coated. Place the coated cookies in a single layer in the air fryer basket, leaving enough space between each cookie. Work in batches as needed.

Air fry for 4 to 5 minutes until the top is golden. Then, carefully flip the cookies and air fry for another 2 to 3 minutes.

Remove from the air fryer, let cool on a rack, and dust with powdered sugar before serving.