In a medium bowl, add the softened butter, brown sugar, vanilla, salt, flour, milk, 1 cup semi-sweet chocolate chips, and ½ cup mini marshmallows and mix until combined.
Place 4 graham crackers in a zip-lock bag, use a rolling pin to crush the graham crackers. Place in a small bowl.
Use a 1” scoop or a small teaspoon to scoop the truffle mixture and roll into 1” balls. Roll all 36 cookie dough balls in crushed graham crackers, and place them on a parchment lined tray.
Freeze for at least an hour.
Once the truffles have chilled an hour or more, place a heatproof (metal) bowl, over a small pan filled water. Bring the water to a low simmer.
Add 3 cups of semi-chocolate chips and 3 teaspoons vegetable oil to the metal bowl (the double boiler). Stir until melted.
Using 2 forks, dip each truffle into the chocolate. You will need to roll it around until the chocolate coats each truffle.
Place the truffles on a parchment-lined tray, and immediately sprinkle with mini marshmallows then sprinkle crushed graham crackers.
Keep in fridge in an airtight container until ready to enjoy!
Notes
The mini marshmallows used in this recipe are made by Kraft and called Jet-Puffed Mallow Bits, but you could use regular mini marshmallows and cut them into tiny pieces.