01 - Mince the frozen banana slices, coconut milk, optional coconut water, peanut butter, sweetener (if using), cinnamon, ginger, vanilla extract, and ice into a high-speed blender.
02 - Process on high speed until thoroughly emulsified and a creamy consistency is achieved. Scrape down the blender sides as needed to ensure uniform blending.
03 - Sample the mixture and incorporate additional sweetener if a sweeter profile is desired. Blend briefly to combine.
04 - Dispense the smoothie into two serving vessels. Garnish with a pinch of cinnamon or toasted coconut flakes, if desired, and present immediately.