Mix in the peppermint and vanilla extract and chocolate chips
Either remove the air fryer tray and line the basket with parchment paper. If you don’t have an air fryer with a tray. Line the bottom with foil to cover the holes, then add a layer of parchment paper. Let some of the parchment paper come up the sides of the air fryer to make it easy to remove the brownies when they are done cooking. Alternately, you can also cook brownie mixture in air fryer dish.
Pour in the brownie mixture.
Top the brownies with an additional chocolate chips.
Air fry at 330 °F for 10-15 minutes, or until they reach an internal temperature between 190 °F-210 °F(190 °F for fudgey brownies and 210 °F for cakey brownies)
Let the brownies rest for several minutes in the air fryer basket.