Place ingredients in a blender. Mix until smooth and oats are not noticeable in the texture when you taste it.
If your fruit is not ripe enough, you may need to add a sweetener of your choice, such as a pitted, dried date or half a packet of Stevia.
You can use sweetened or unsweetened almond milk or cashew milk. I haven't tried it with oat milk, but that probably would work too! Of course, dairy milk would work if you don't need this to be vegan.