Preheat air fryer to 375 for 3-5 minutes

Open can and take biscuits apart.

Cut hole in center of each biscuit with a round cookie cutter.

Grease bottom of air fryer with coconut oil or other oil. Do not use cooking spray as that may ruin the fryer basket

Place donuts in air fryer basket, spreading them apart so the air can circulate around the donuts.

Cook for 2.5 minutes then flip donuts.

Cook for another 2.5 - 3 minutes or until golden brown.

While donuts are cooking, melt butter

Mix sugar and cinnamon in a bowl.

Remove donuts from air fryer and place on a cookie sheet.

Using a pastry brush, brush on butter, then dip each donut into the cinnamon sugar mixture, coating all sides.

You'll have left over "holes" from the middle of the donuts. Roll them into balls in your hands.