Take one banana and mash it to make a thick paste. Add cocoa powder (optional) if you like chocolate flavour. You can use cinnamon/cardamom/coffee powder as per your preferred flavour. Then add 2 cups of rolled oats.

Now add 1 cup milk and make a paste. Add chia/basil/flax seeds of your choice. You can skip that if you don't have. You can also add 1tsp honey if you like more sweet. Let the mix rest overnight in fridge.

Next morning, your overnight oats is ready. Toppings are optional. You can skip this or you can top it with banana/fruits/nuts/chocolate anything.