Preheat Artisan Outdoor Oven to 400°F.
Line the bottom of a cast iron skillet with chocolate chips and evenly top with marshmallows. Give some space because they will enlarge as they toast.
Cook until marshmallows become golden brown and the chocolate is melted (It will appear shiny when it's melted).
Break graham crackers into large chunks.
Remove skillet from the oven and dip graham crackers into marshmallows and chocolate.