Preheat the air fryer to 360 degrees F.  If your air fryer does not have a preheat option, turn your air fryer to the 360 degrees F option and let it run for approximately 5 minutes.

Cut the donut holes from the biscuits with a small cookie cutter. Coat the air fryer basket with olive oil (do not use a non-stick cooking spray as those could damage your air fryer).

Place the donut holes in the air fryer and cook for 4 minutes (tossing them halfway through the cook time).  While the donuts are cooking, combine the cinnamon and sugar together in a small bowl and melt the butter in a separate bowl.

Remove the donuts after the cooking time, dip the donuts holes in the melted butter then roll them in the cinnamon sugar mixture (make sure to get the bottoms and the sides of the donuts).

Serve immediately while they’re still warm and enjoy!