01 - Place peeled bananas, cold milk, maple syrup or honey, vanilla extract, and ice cubes into a blender.
02 - Blend the mixture on high until completely smooth and frothy, approximately 30 seconds.
03 - Taste and adjust sweetness by adding additional maple syrup or honey if needed.
04 - Pour the shake into two chilled glasses.
05 - Top each serving with whipped cream, banana slices, and ground cinnamon if desired. Serve immediately.