Use a biscuit cutter and cut out the middle. You can use these later to make mini donuts, or donut holes.
Spray your air fryer basket with cooking spray.
Place your biscuit dough into the air fryer basket.
Set the temperature to 350 degrees F, air fryer setting, for 5 minutes.
After 5 minutes, remove the biscuits, place on a cutting board, and let them cool down.
Meanwhile, in a small mixing bowl, mix the powdered sugar, unsweetened baking cocoa, butter (melted), vanilla, and milk. Mix well, until everything is well blended.
Wait a few minutes, until the donuts are cooled, and then spread the chocolate frosting on the donuts.
Plate, serve, and enjoy!