Once frozen, remove the portions, and store them in a freezer bag with a label and the date. Silicone muffin pans make the removal easier, but standard muffin pans can work too.
You may have to let a standard muffin pan thaw on the counter or dip the bottom in warm water to get the portions out. If you don't have one, try using an ice cube tray.
Put your smoothie cups into a container with a tight-fitting seal, like a mason jar or a protein shaker, and let them defrost in the fridge overnight or at room temperature.
You can also freeze your blended smoothie into a mason jar, leaving room for the smoothie to expand, but a row of mason jars takes up space in the freezer.
