Cut the banana in half and mash in a small bowl before adding the milk, greek yoghurt, 2 of the sliced dates and chia seeds.

Mix to combine all of the ingredients before covering the bowl and placing it into the fridge and leaving overnight.

The next morning, warm your oats in the microwave for 30 seconds (optional), before slicing the remaining half of the banana and adding it along with the toasted walnuts and remaining sliced date to your oats