Make the dough

1. Melt butter in a large, microwave-safe bowl.
2. Add brown sugar, egg yolk and vanilla and stir to combine.
3. Add remaining ingredients and stir until just combined.
4. Chill dough in the fridge for 30 minutes

To cook right away

1. Chill dough in fridge for 30 minutes.
2. Scoop into balls and flatten lightly with a fork.
3. Preheat air fryer at 300 degrees F for 2 minutes.
4. Add 4 cookies on parchment paper and cook for 10 minutes.
5. Turn off air fryer and open door or drawer. Let sit for 5 minutes before transferring to a cooling rack.
6. Store in a sealed container on the counter for 4-5 days.

To Freeze for later

1. Scoop into balls and lightly flatten.
2. Freeze on a plate or cookie tray for at least 2 hours.
3. Transfer to a freezer-safe bag or container.
4. When ready to cook, preheat air fryer to 300 degrees F for 2 minutes.
5. Place up to 4 cookies on parchment paper and cook for 10 minutes.
6. Turn off air fryer and open the drawer or door. Let sit for 5 minutes before transfering to a cooling rack.