Place three halves of the graham crackers in the basket of your air fryer.
Cut your marshmallows in half. Stick the two sticky sides of the marshmallows down on the graham crackers and gently press them down to help them stick.
Turn your air fryer to 400°F for 5 minutes. At the 4-minute mark, check on them to see if the marshmallows are golden brown.
Once they are cooked, top each marshmallow with three pieces of chocolate.
Top each one with the other half of the graham crackers and enjoy warm.