Place all the ingredients in a food processor or high speed blender.
Blend until smooth. Pause to scrape down the sides if necessary.
Either enjoy immediately, or transfer to a covered container and freeze for a couple of hours for a more firm, scoopable texture.
See post above for banana freezing tips and step by step pics!1 medium banana is approximately 100g/3.5 oz or just under ½ a cup of banana slices2 medium bananas makes 4 scoops/2 servingsBest eaten fresh on the day of making as it tends to become harder and less creamy with more time in the freezer.