01 - Lightly spray a microwave-safe mug with nonstick cooking spray.
02 - Add the angel food cake mix and water to the mug. Stir well until fully combined and smooth.
03 - Place the mug in the air fryer basket.
04 - Air fry at 320°F for 7-8 minutes or until the cake has risen and is set in the center. Check with a toothpick—if it comes out clean, the cake is done.
05 - Carefully remove the mug from the air fryer (it will be hot). Let cool for 1-2 minutes.
06 - Top with whipped cream and fresh berries, if desired. Serve immediately.