01 - Add bananas, milk, maple syrup or honey, vanilla extract, and ice cubes to a blender.
02 - Blend on high speed until completely smooth and frothy, approximately 30 seconds.
03 - Taste the shake and add additional sweetener if desired.
04 - Divide between two chilled glasses; top with whipped cream, banana slices, and a sprinkle of ground cinnamon if desired.
05 - Serve immediately while cold for optimal freshness.