1/2banana(sliced and frozen will make it extra creamy)
Add the spinach and milk to the jug of a blender and blend for 1-2 minutes on high speed until the spinach is blended with the milk. Add all remaining ingredients and blend on high speed for 30 seconds-1 minute until all ingredients are blended.
Optional add ins:
1/4 cup Greek yoghurt (or replace 1/2 the milk with yoghurt)