01 - Add bananas, milk, maple syrup or honey, vanilla extract, and ice cubes to the blender.
02 - Blend mixture until completely smooth and frothy, approximately 30 seconds.
03 - Taste shake and add more sweetener if desired.
04 - Divide shake evenly into two chilled serving glasses.
05 - Top with whipped cream, banana slices, and a sprinkle of ground cinnamon as desired. Serve immediately.