Soak the ots in enough water overnight or at least for 2 to 3hours in advance. This will soften the oats so you can easily blend the oats in the blender to make the smoothie.
Once the oats is soaked and it's soft enough, you can discard any leftover water used for soaking and add the softened oats to the blender.(If you are using a high power blender which can blend the dry oats very well, you may not need to soak the oats in advance)You can also add about one teaspoon of raw dry oats (that is not soaked) for a more denser texture if you like!
Also add roughly sliced banana, instant coffee powder, milk, maple syrup and vanilla extract, blend until smooth.
Transfer to serving cups, enjoy immediately for best results!