In a large mixing bowl, combine peanut butter, sugar, and egg.

Mix well until smooth.

Use an ice cream scooper to drop cookie dough onto a parchment-lined air fryer basket.

Set your air fryer to 350°F (175°C) and bake for 5 to 8 minutes.

Let the cookies cool in the air fryer before removing them to rest completely.

Plate, serve, and enjoy!