Preheat your oven to 350°F (175°C).
In a medium bowl, combine graham cracker crumbs and melted butter.
Press the mixture firmly into the bottom and up the sides of a muffin tin.
Bake the crusts for 5-7 minutes until golden brown.
Remove the tin from the oven and sprinkle chocolate chips evenly over the crusts.
Top with mini marshmallows, covering the chocolate layer.
Return to the oven and bake for an additional 5-7 minutes.
Allow to cool for a few minutes before removing from the muffin tin.
Serve warm or let cool completely before storing.
