01 - Place the bananas, Greek yogurt, milk, and optional sweetener into a blender container.
02 - Add vanilla extract, cinnamon, seeds, and ice cubes if using a thicker consistency.
03 - Blend on high speed until completely smooth and creamy, approximately 45-60 seconds.
04 - Taste the smoothie and adjust sweetness by adding more honey if needed. Add additional milk for a thinner consistency.
05 - Pour evenly into two glasses and serve right away for optimal texture and temperature.