We halve the graham crackers, and put six of the pieces on a piece of foil to fit in our toaster oven. We top with six small pieces of chocolate (reserving the rest of the bar for another use). The rest of the graham crackers are also reserved.
We put the chocolate topped grahams into the toaster oven and heat to 350° F. We let the chocolate melt for a few minutes.
Meanwhile, we put the marshmallows on wooden skewers. Carefully, we cook the marshmallows on the grill, rotating them until the desired doneness.
We take the soft chocolate topped graham out of the toaster oven (it helps if an “extra” person retrieves these) and use the plain grahams to help pull the gooey marshmallows off of the skewers and onto the chocolate. Each sandwich is pressed together and we repeat.