I haven't made a smoothie for a while but I had all the ingredients for this one and thought I'd give a go. It was tasty although the dates made it rather sweet. I used cow's milk but you could use any kind of milk you like.
50g rolled oats
Place the dates and milk into a blender or food processor. Puree until the dates are blitzed up. Add the bananas to the blender and puree until smooth.
Add the oats, wait for 2-3 mins for the oats to soak into the date milk mixture and puree. Pour the smoothie into glasses and serve.