In a medium bowl, whisk the flour, baking soda, and salt together. Set aside.
1 ¾ cups (259g) flour*, ½ teaspoon baking soda, ½ teaspoon fine sea salt
Using a hand mixer or a stand mixer fitted with the paddle attachment, cream the butter with both sugars. Add the egg (or egg replacer) and vanilla extract and mix to combine. Add in the dry ingredients and mix on low speed until cookie dough forms. Fold in the chocolate chips.
¾ cup (170g) unsalted butter, ½ cup (100g) granulated sugar, ¼ cup (50g) light brown sugar, 1 egg*, ½ teaspoon vanilla extract, ⅔ cup (113g) semisweet chocolate chips
Preheat the air fryer to 350°F for 3 minutes. Line the bottom of the basket with parchment paper after preheating.
Scoop 1-2 tablespoons of dough and arrange in the air fryer basket, 1 inch apart. Air fry for 5-6 minutes. The cookies may not look done at this point. Allow the cookies to set in the air fryer for 2-3 minutes before transferring to a wire cooling rack.
Notes
If you are not looking to make these cookies gluten free, feel free to use AP flour.
For eggless cookies, I like Bob's Red Mill Egg Replacer. Mix 1 tablespoon egg replacer with 2 tablespoon water. Once mixed with water, the egg replacer must sit for just a few minutes to thicken.
You may need to air fry in batches, depending on how large the basket of your air fryer is and how many cookies you can fit in at one time. You don't want to overcrowd the basket, the cookies will spread slightly.