In a large bowl, whisk together the dry ingredients (flour, baking soda, salt). Set aside.
In the bowl of a stand mixer (or using a hand mixer and a separate large bowl), beat the butter for 2 minutes until creamy. Then beat in both sugars until well incorporated and creamy.
Beat in the egg until incorporated, then the vanilla extract.
Gradually add in the dry ingredients, just until incorporated. It's important not to overmix!
Gently fold in the chocolate chips.
Use a 2" cookie scoop to scoop out then form round cookie dough balls (about the size of golf balls), and place about 2" apart from one another in the prepared parchment-lined air fryer basket.
Air fry at 330°F for 8-10 minutes, or until the centers are completely baked through and to your desired level of crispness.
Allow to cool in the basket for 5 minutes, then transfer cookies to a wire rack to cool completely.
Repeat with the remaining batter until all cookies are air fried.
Notes
Makes approximately 24-28 cookies.Air frying time will vary depending on your particular air fryer. I used the Ninja Foodi in Air Crisp mode and tested different temperatures and times, and the ones listed in this recipe are the ones that yielded the best results for us. If your air fryer tends to cook quickly, you may want to try air frying them at 325°F for 7-8 minutes first, then adding time and/or increasing temperature as needed. Storage: store cookies in an airtight container at room temperature for up to one week. Freezing: You can freeze the unbaked cookie dough in a ziplock freezer bag or freezer safe airtight container for up to 3 months.