Place the milk, oats, cacao powder, maple syrup, and vanilla extract in a bowl or large container with a lid.
Stir well until everything is mixed together. If using frozen cherries, stir them in now.
Seal your container well/cover with a lid or plastic wrap, Place in your fridge for at least 6 hours or overnight.
Just before serving, fold in your fresh cherries if using those instead of frozen.
Spoon your overnight oats equally into four separate bowls and top with the cacao nibs or dark chocolate chips and extra cherries, if desired.
Stays good in the fridge for up to 4 days.