In a high speed blender, add all your ingredients, except for the ice. Blend until combined. For a thicker smoothie, add ice and blend once more.
Transfer the smoothie into two glasses and serve immediately.
TO STORE: Smoothies can be stored in the refrigerator, covered, for up to 3 days. Be sure to whisk it well before serving. TO FREEZE: Place the smoothie in ice cube trays or a shallow container and store in the freezer for up to 6 months. When ready to enjoy, simply place the frozen portions into a blender and blend until thick and smooth.