Preheat your oven to 350°F (175°C).
In a mixing bowl, cream together the butter, brown sugar, and granulated sugar until light and fluffy.
Add the eggs and vanilla extract, and mix until combined.
In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Fold in the chocolate chips, mini marshmallows, and graham cracker crumbs.
Drop spoonfuls of dough onto a baking sheet, spacing them about 2 inches apart.
Bake for 10-12 minutes, or until the edges are golden brown.
Allow the cookies to cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely.