In a large bowl mix together the butter, brown sugar, vanilla extract, and egg. After it’s thoroughly mixed, (it should be a thick, creamy texture) add in the flour.
Then gradually add the salt and baking powder. When you’re finished mixing all of the ingredients together, fold in the chocolate chips. Cover the bowl and place it in the fridge for 30 minutes.
When you’re ready to make the cookies, remove the dough from the fridge and allow it to sit at room temperature while you preheat the air fryer. Preheat the air fryer to 315 degrees. Line the air fryer basket with parchment paper. Grease 4-6 muffin rings very lightly with vegetable oil. Place the muffin rings (or silicone muffin liners) in the basket, on top of the parchment paper.
Roll the dough into balls that are about two inches thick. Flatten the balls, and top with additional chocolate chips. Place them inside the greased muffin rings. Air Fry for about 10 minutes.
Cookies will be thick, golden brown, and soft in the middle. Allow cookies to sit and cool right in the rings, for about ten minutes before transferring them to a cooling rack until they’re completely cooled