Pour milk into a small bowl or container (I personally use almond milk)

Add PB2 and stir until chunks dissolve

*Optional* Add sweetener to taste

Add oats and stir

Cut banana into slices and then cut each slice into quarters for smaller pieces and add to mixture

Add blueberries and stir it all up!

Seal container, place it in the fridge and it will be ready in the morning. Feel free to add more milk to make the oats a little more soggy.