Preheat oven to 350 degrees.
Place the beans, eggs, oil, vanilla, and sugar in a food processor and puree for 1 minute.
Add the flour, baking powder, cocoa powder, and salt. Pulse to combine.
Stir 1/2 cup of the chocolate chips into the batter and pour into a greased and parchment paper lined 8 x 8 inch pan and top with the remaining 1/4 cup chocolate chips, graham crackers and marshmallows.
Bake 30 minutes or until toothpick comes out clean.
Use the parchment paper to remove the brownies from the pan and cut into even squares.