01 - Place bananas, cold milk, maple syrup or honey, vanilla extract, and ice cubes into a blender jar.
02 - Blend on high speed for approximately 30 seconds until the mixture is completely smooth and frothy.
03 - Taste and adjust sweetness by adding more maple syrup or honey to preference.
04 - Divide shake evenly between two chilled serving glasses.
05 - Top each serving with whipped cream, banana slices, and a light sprinkling of ground cinnamon if desired. Serve immediately.