Melt butter in a microwave-safe bowl for 10-20 seconds or just until the butter begins to melt. Add the brown and white sugars and beat until fully combined. Beat in the egg and vanilla and beat for another 30 seconds. Stir in remaining ingredients until fully combined.
Place in the fridge to chill for 30 minutes to overnight (optional step). Line the air fryer racks with parchment paper. Scoop 2-tablespoon dough balls into the air fryer basket, about 1.5 inches apart. You should be able to fit 2-4 depending on the size of your air fryer.
Air Fryer at 325F degrees F for 5-7 minutes or until golden and cooked through. Allow cookies to rest 2-3 minutes in the air fryer before removing.