- In a large bowl, whip the heavy cream until stiff peaks form. Set aside. 
- In a separate bowl, beat the softened mascarpone cheese and granulated sugar until smooth and creamy. 
- Gently fold the whipped cream into the mascarpone mixture until well combined. 
- In a small bowl, whisk together the matcha powder and hot water until smooth. Add the matcha liqueur or coffee liqueur, if using. 
- Quickly dip each ladyfinger into the matcha mixture and arrange them in a single layer at the bottom of a 8x8 inch baking dish. 
- Spread half of the mascarpone cream mixture over the ladyfingers. 
- Repeat the layers with the remaining ladyfingers and mascarpone cream. 
- Cover the dish with plastic wrap and refrigerate for at least 4 hours, or preferably overnight. 
- Before serving, dust the top with additional matcha powder. 
- Cut into squares and serve chilled. 
- Optional Tips: For a stronger matcha flavor, increase the amount of matcha powder. If matcha liqueur is unavailable, coffee liqueur can be used as a substitute, or it can be omitted entirely. For a softer texture, soak the ladyfingers slightly longer, but be careful not to over-saturate them.