01 - Brew fresh coffee and allow it to cool completely, or use pre-chilled coffee from the refrigerator.
02 - Add the sliced banana, chilled coffee, protein powder, almond milk, and ice cubes to a high-speed blender.
03 - For extra nutritional value, add any optional ingredients such as chia seeds, nut butter, cinnamon, or sweetener.
04 - Blend on high speed until the mixture is smooth and creamy, about 30 to 45 seconds.
05 - Taste the smoothie and adjust sweetness or consistency as needed by adding more sweetener or a splash of almond milk.
06 - Pour into a large glass and serve right away for the best flavor and texture.