Preheat oven to 350°. Lightly grease/spray a 10-cup Bundt pan.
Combine sugar, cocoa, and cinnamon. Set aside.
Dip quartered biscuits into melted butter. Dredge in sugar mixture. Layer biscuits in pan.
Bake for about 1 hour. Cover with aluminum foil, if necessary, to avoid excess browning.
Cool in pan 10 minutes. Invert onto plate and serve.