Combine the sugar and cinnamon in a gallon size zip-top bag and add the biscuits. Seal the bag and toss to coat the biscuit pieces. Place the coated biscuit pieces in the prepared pan evenly.
In a small bowl, combined the melted butter with the remaining sugar and cinnamon mixture left in the ziptop bag. Mix well and pour over the biscuit pieces.
Bake for 45 to 55 minutes, or until the biscuits are cooked through. Cool in the pan for 10 minutes then invert over a serving dish and allow to cool some.