01 - Add almond milk, banana, frozen berries, chia seeds, and sweetener to a blender.
02 - If using, add nut butter, vanilla extract, and cinnamon to the blender.
03 - Blend on high speed until smooth and creamy, approximately 1-2 minutes.
04 - Taste and adjust sweetness as desired by adding more sweetener if needed.
05 - Pour into two glasses and let sit for 2-3 minutes to allow chia seeds to swell slightly. Serve immediately.