Preheat your air fryer to 370°F.
In a large bowl, whisk together the flour, baking powder, salt, cinnamon, and sugar.
In another bowl, beat the egg, milk, and vanilla until combined.
Pour the wet ingredients into the dry and stir until just mixed. Gently fold in the diced apples.
Spray the air fryer basket with cooking spray.
Using a spoon, drop fritter-sized dollops of batter into the basket, leaving a little space between each.
Air fry for 5-6 minutes, flip carefully, and air fry another 3-4 minutes until golden.
Let cool slightly and dust with powdered sugar if you like!