01 - In a medium bowl, combine rolled oats, milk, espresso or coffee, chia seeds, maple syrup, and vanilla. Stir until evenly mixed.
02 - Divide the oat mixture evenly between two jars or airtight containers.
03 - In a small bowl, whisk together mascarpone, Greek yogurt, and sweetener until smooth and creamy.
04 - Spoon the mascarpone mixture over the oat base in each jar, creating an even, thick layer.
05 - Cover jars tightly and refrigerate for at least 8 hours to allow oats to absorb the liquid and soften.
06 - In the morning, top each jar with dark chocolate shavings and a dusting of cocoa powder. Add ladyfinger pieces and a drizzle of extra coffee if desired. Serve chilled, stirring together or scooping each layer separately.