01 - In a medium bowl, combine the rolled oats, milk, brewed espresso, chia seeds, maple syrup, and vanilla extract. Stir thoroughly until all ingredients are evenly incorporated.
02 - Divide the oat mixture evenly between two jars or airtight containers, pressing gently to level the surface.
03 - In a small bowl, whisk together the mascarpone cheese, Greek yogurt, and maple syrup until smooth and creamy with no lumps remaining.
04 - Spoon the mascarpone mixture over the oat base in each jar, spreading it into an even, thick layer on top.
05 - Seal the jars tightly and refrigerate for at least 8 hours to allow the oats to soften and the flavors to meld.
06 - In the morning, top each jar with dark chocolate shavings and a generous dusting of cocoa powder. Add crushed ladyfinger pieces and a light drizzle of espresso if desired. Serve chilled, stirring the layers together or scooping through each one for a true tiramisu experience.