In a high speed blender, add the milk, condensed milk, and crushed ice, and blend until combined. Add the avocado and continue to blend until creamy and smooth.
Pour the smoothie into four glasses and enjoy immediately.
Notes
* You can substitute this for 2 tablespoons of your favorite granulated sweetener.** You can use pre-frozen avocado chunks. TO STORE: This smoothie can be stored in the fridge, covered, for up to one day. Be sure to stir it well before serving.TO FREEZE: Store the smoothie in ice cube trays in the freezer for up to six months. To re-blend, place the frozen portions into a blender and blend until thick and smooth.