First, wash and chop the apple, cucumber, and banana.
Next, place all of the ingredients into a blender.
Then, blend until smooth, about one to two minutes.
If the mixture is too thick, add a little more almond milk.
Finally, serve immediately, while fresh.
If you'd like to make it more filling and nutritious, you can also add one tablespoon of natural peanut butter or a scoop of plant based protein powder.