Heat oven to 350°F. Spray 12-cup fluted tube cake pan with cooking spray. Place half of the sliced bananas, in bottom of pan. Spread out evenly.
Remove biscuit from cans and separate into 16 biscuits. Cut each biscuit into quarters.
In large bowl, stir the 1 cup of granulated sugar and ground cinnamon together. Roll biscuit pieces in sugar mixture; arrange evenly over bananas in pan. Top evenly with the remaining banana slices.
Melt butter in a medium microwave-safe bowl. Add 1/2 cup of the leftover sugar/cinnamon mixture and 1/2 cup light brown sugar; beat with whisk until combined. Pour mixture evenly over biscuit pieces.
Bake 35 to 45 minutes or until golden brown and thoroughly cooked in the center. Let stand at least 5 minutes before serving.
Carefully (pan will be hot) place a large platter upside down over pan; turn platter and pan over. Remove the pan. Divide into 6 servings. Serve and enjoy!