Melt your butter in a small bowl or microwave safe measuring cup.
In a medium sized bowl add the melted butter. In a second medium sized bowl combine white sugar, brown sugar and cinnamon. Set aside.
Separate biscuit dough into the individual biscuits and cut out the centers using a biscuit cutter, or a icing tip to create a doughnut shape.
Place the prepared doughnuts in the air fryer basket so they are not touching and have room to expand.
Air fry at 350 ° until golden brown for 4 to 6 minutes. Flip doughnuts and cook an additional 2 to 3 minutes.
Remove the doughnuts from air fryer onto a plate.
Dip each doughnut into the melted butter (making sure to coat top, bottom, and the sides), then dip into the sugar-cinnamon mixture until completely coated.