Break each graham cracker sleeve in half and assemble and place four of the eight halves on a sheet pan lined with parchment paper. Set the other halves of graham cracker squares aside for now.
Place one large marshmallow on each square and broil in the oven until the marshmallow starts to turn golden brown. This takes about 1-2 minutes, but keep an eye on it as it is extremely easy to burn things on the broil setting.
Once out of the oven, immediately place a chocolate bar on the marshmallow, followed by a layer of your choice of blueberries, strawberries, raspberries, or banana.
Sprinkle some powdered sugar on top and add an extra drizzle of chocolate syrup, optional.
Top with extra graham cracker square and gently press the s’more down.
Repeat with all squares, creating your favorite combination of fruits.