Make brownies according to recipe, and spoon into lined cupcake tin.
Cook for about 5 minutes less than what recipe calls for. Once done, take out an let cool for a few minutes, then push the center of each brownie to make an indentation.
Place a marshmallow in each “cup”. Then place under a broiler until marshmallows start to get toasted.
Take pan out and let cool for about 15-20 minutes. Then top with graham crackers and chocolate.