Line a 9-inch square baking dish with parchment paper. Set aside.
Place the dark chocolate chips in a large microwave-safe bowl and cook on high for about 2 minutes, stopping every 30 seconds to stir the chips until the chips are completely melted.
Remove the lid and foil from the frosting and place the container in the microwave on high for about 35 seconds.
Scoop the frosting into the bowl with the melted chocolate and stir until thoroughly combined.
Add the marshmallows and three-quarters of the mini chocolate chips to the chocolate and frosting mixture, folding the ingredients into the chocolate mixture.
Take 4 sheets of the graham crackers and crumble them into the mixture and fold them in as well.
Pour the chocolate mixture evenly into the prepared pan.
Sprinkle the remaining mini chocolate chips and crumble the remaining graham crackers over the top.
Place the pan in the fridge for about 2 hours or until hardened.
Cut into squares to serve.
Notes
Add more of the mini chocolate chips or graham crackers if desired. It shouldn’t hurt the setting of the fudge.
This fudge is super-rich.
The more expensive chocolate chips work better for this recipe than the cheaper options. I used Ghirardelli for this recipe, and it was perfect.
If storing this fudge, don't forget to separate the layers with parchment paper or wax paper.