Preheat oven to 350 degrees.
Remove biscuits from package and cut into sixths.
In a large Ziplock bag, combine 1/3 c. sugar and 1/3 c. graham cracker crumbs.
Add biscuit pieces and shake to coat.
To the same bag, add 1 c. mini marshmallows, 1/2 c. chocolate chips, and graham cracker pieces.
Shake until ingredients are evenly distributed, then pour into a small (6 c.) greased bundt pan.
Drizzle with melted butter.
Bake at 350 degrees for 30 minutes or until top is golden brown.
Cool in pan 10 minutes, then carefully loosen edges and invert onto a plate.
Prepare chocolate ganache topping by heating 1/3 c. heavy cream until simmering; stir in chocolate chips and mix until smooth.
Drizzle ganache over bread, then top with mini marshmallows and graham cracker crumbs.