Pour batter into pan and place pan inside airfryer basket. Place basket back into air fryer.
Set the tempertature to 320°F and cook for 20 minutes.
Once done, remove the basket and let brownie rest for 15 minutes to cool and firm. Then remove the pan from the basket, undo the springform pan sides, and use a spatula to remove the brownie from the bottom on to a serving dish.Cut into squares and enjoy!