Using a big spoon, smear 1 tbsp of marshmallow fluff along the side of a coffee mug. Add the crushed graham crackers to a plate. Roll the fluffed side of the coffee mug into the crushed graham crackers.
Place the coffee mug under the coffee dispenser. Add the chocolate syrup.
Brew an 8-ounce coffee into the mug. Stir until dissolved.
Add the remaining marshmallow fluff and milk to a frother and blend on a latte setting, or steamed milk setting.
Pour the marshmallow milk over the coffee and top with mini marshmallows, additional chocolate syrup, and crushed graham crackers. Enjoy!