Place all of the ingredients in a blender, and process on high for 1-2 minutes or until smooth. Don't worry if it's foamy--that's from the healthy, insoluble fiber from the apple. It's good food for your microbiome!
Apples in smoothies can spike blood sugar. If that’s a concern for you, substitute another fruit like banana or mango. I personally have mild blood sugar issues and never have problems drinking this smoothie, but please do what’s right for you and adapt this recipe to your dietary needs.