Peel, chop, and freeze the bananas and oranges the night before. I do this by placing a sheet of parchment paper on a baking tray and laying the fruit out in a single layer. Cover & pop it into the freezer. This way, the fruit freezes in single pieces and doesn't stick together. Easy-peasy!
In the morning, place the fruit and water (or coconut water) in a blender and blend until smooth.
Add in the parsley and mint, and blend until smooth.
Finally, add in the olive oil and any optional ingredients, and blend until fully incorporated. Serve and enjoy cold!