First, thoroughly mix the mascarpone with sugar until well combined. Stir in the eggnog and gently fold in the whipped cream.
In a separate bowl, mix the espresso and amaretto. Briefly soak the ladyfingers in this mixture, ensuring not to oversaturate them. Place a layer of the soaked ladyfingers in a baking dish, and spread half of the mascarpone mixture on top.
Add the remaining soaked ladyfingers on top of the mascarpone layer, and finish with the remaining mascarpone mixture.
Allow the tiramisu to set in the fridge overnight, allowing the flavors to meld.
Shortly before serving, sift cocoa powder over the top for a finishing touch.
This quick and delicious eggnog tiramisu is a delightful twist on the classic Italian dessert. Enjoy the rich flavors and creamy texture after letting it chill overnight in the refrigerator.