In a mixing bowl, combine Greek yogurt, mascarpone cheese, vanilla protein powder, maple syrup or honey (if using), and vanilla extract.
Stir well until it turns into a smooth, creamy mixture.
In a separate shallow dish, pour the cooled espresso.
Dip each ladyfinger biscuit quickly into the espresso, ensuring they don’t get too soggy.
Start assembling your High Protein Tiramisu by placing half of the espresso-soaked ladyfingers at the bottom of a serving dish or a glass trifle dish.
Layer half of the creamy protein mixture over the ladyfingers.
Repeat the layers one more time, ending with the creamy mixture on top.
Cover the dish and refrigerate for at least 2 hours, letting the flavors meld.
Just before serving, dust the top with unsweetened cocoa powder and garnish with dark chocolate shavings.