In a large bowl or a stand mixer beat together softened butter and peanut butter. Add the sugars and using an electric mixer mix until all combined well.
Add eggs, beta on low, and follow with milk. Mix to combine.
In a medium mixing bowl, combine flour and baking soda. Set aside.
Slowly add the flour mixture in small increments. Mix until just combined. Do not overmix.
Roll the cookie dough batter into 1 tablespoon-sized balls. Gently flatten the balls with a fork two-time sin opposite directions making a pattern (crisscross pattern).
Baking directions. Preheat the air fryer to 350 degrees Fahrenheit according to manufacturer instructions. (Mine was 375 F for 5 minutes, I used a Cosori air fryer 5.8 quarts. You could also use a Ninja Foodi.
Arrange the cookies in a single layer in the air fryer tray. If you have air fryer basket liners great, if not that’s fine, and place the cookies right in the bottom of your air fryer. Make sure you have enough space between the cookies. Don’t use parchment paper, because cookies need airflow and without breathing holes they will not bake correctly.
Air fry the cookies for 6 minutes (you'll need to do this in small batches). No need to flip them during baking.
Carefully and slowly remove cookies from the air fryer. Cookies should rest until completely cool to strengthen. Enjoy with a glass of milk!
