In a large bowl, mix together oats, cocoa powder, chia seeds and salt.
Add espresso (or other coffee), milk, 2 tablespoon maple syrup and 1 teaspoon vanilla (reserve remaining maple syrup and vanilla for later). Mix together thoroughly.
Pour into airtight container and refrigerate 4-8 hours.
To make mascarpone, add coconut yogurt and remaining maple syrup and vanilla extract to a small bowl. Stir to combine.
Remove overnight oats from fridge, and divide half the mixture between 2 glass or mason jars.
Follow this with a layer of 'mascarpone', then repeat once more (so you have two layers of each in both jars).
Sift over cocoa powder, and decorate with coffee beans if desired.
