Cut the banana into slices, place in a freezer bag and freeze overnight.
The next morning cut 1 small ripe avocado in half, stone it and remove the flesh. Stone and roughly chop 1 fresh date. Place banana, avocado and date with açaí berry powder, coconut oil, frozen berries and coconut water or water in a tall mixing bowl and blend until smooth with a hand blender.
Topping tip: flax or chia seeds, fresh banana slices, berries or seasonal fruit or even fine cocoa chips. There is something for everyone!