Line a 9 by 13 inch baking dish with parchment paper and set aside.
Measure out 6-7 cups of Golden Grahams and pour into a large bowl.
In a large sauce pan, add your mini marshmallows (reserving a few for the top) and your butter.
Place on stove over medium heat and continue stirring until melted and well combined.
Once your marshmallows and butter are completely melted and combined, pour it over your Golden Grahams cereal. Stir until your cereal is evenly coated with the marshmallow mixture.
Transfer your mixture into a baking dish lined with parchment paper and press down with a greased spatula until it's even.
Top with extra min marshmallows and Hershey milk chocolate pieces.
Let set in the fridge or freezer for about 15 minutes and then remove, cut into bars and enjoy!!