Preheat oven to 350 degrees. Line a 9×13 or a quarter baking sheet with parchment paper. Use the chocolate graham crackers to cover the parchment, set aside.
In the bowl of a stand mixer, beat together butter, sugars and vanilla for 2-3 minutes. Add melted chocolate chips, mix until combined. Add egg, then egg yolk, mixing just until combined.
In a medium size mixing bowl, whisk together flours, cocoa powder, baking soda, and salt. With mixing speed on low, add dry ingredients. When no flour pockets remain, turn off and remove bowl from stand. Fold in ½ c. chocolate chips and ⅓ c. miniature marshmallows. Spread cookie dough over the graham crackers, in an even layer.
Place in oven and bake for 6 minutes, remove and gently press in remaining graham crackers (broken into pieces), marshmallows, and candy bar pieces. Place in oven and bake for an additional 10-12 minutes or until the marshmallows become golden brown in color. Remove and allow to cool in pan for 25-30 minutes before removing and cutting into bars.