Place all ingredients into the blender, with the liquids at the bottom, then blend until smooth and to your desired consistency. If too thick, add more liquid. If too thin, add some ice to thicken up or more frozen fruit.
1 1/3 cups unsweetened almond milk, 1/3 cup plain kefir or plain greek yogurt, 1 frozen banana, 1 cup frozen blueberries, 2 dates