Place four graham cracker halves inside the air fryer basket.
Cut a small slice off the bottom of each marshmallow, and stick it to the graham cracker. This will keep it secure during cooking.
Cook at 375˚F/191˚C for about 7-8 minutes, or until the marshmallow is golden brown.
Add the desired amount of Hershey's chocolate and top with the other graham cracker.
Place back in the air fryer for another 2 minutes or until the chocolate begins to melt.
Cooking time may vary considerably depending on your air fryer model. A toaster oven air fryer can roast mallows in as little as 30 seconds. But most standard air fryer models take at least 5 minutes. I would highly recommend peeking at your s’mores starting at the 5-minute mark.