01 - In a medium bowl, combine rolled oats, milk, cooled espresso or strong coffee, chia seeds, maple syrup, and vanilla extract. Stir until evenly incorporated.
02 - Divide the oat mixture evenly between two serving jars or airtight containers, pressing gently to level the surface.
03 - In a small bowl, whisk together mascarpone cheese, Greek yogurt, and maple syrup or honey until smooth, creamy, and free of lumps.
04 - Spoon the mascarpone mixture over the oat base in each jar, spreading it into an even, thick layer.
05 - Seal the jars tightly and refrigerate for at least 8 hours or overnight, allowing the oats to absorb the liquid and soften completely.
06 - In the morning, finish each jar with dark chocolate shavings and a light dusting of cocoa powder. Add ladyfinger pieces and a drizzle of extra coffee if desired. Serve chilled—stir everything together or enjoy each creamy layer separately.