Chop frozen banana. If you want to freeze bananas specifically for protein smoothies like this, I have found it best to peel the banana first then either wrap it in aluminium foil or place them in a freezer bag.
Add all ingredients to the Soup and Co or blender.
Blend on Ice function (or slow function) for 30 seconds.
Blend on speed 2 on blender function (slightly faster speed) for 30 seconds.
Then blend on maximum speed for one minute.
* Only add protein powder to your smoothie if it has been recommended to you by a your health professional. I am not a dietitian and while additional protein has been recommended for me, it may not be appropriate for you - please check first.
Recipe by Planning With Kids at https://planningwithkids.com/2012/07/23/protein-smoothie/