Place four crackers in a basket and place one marshmallow half on each cracker. Place the sticky side of the halved marshmallow on a cracker so it can stick to it.
Air fry for 3 minutes, or until the marshmallow is golden brown on top.
Remove the crackers from the air fryer basket and place one chocolate square on each marshmallow. Allow it to melt for 20-30 seconds. Place another Graham cracker on each one and enjoy.