01 - In a mixing bowl, beat the heavy cream with half the sugar until soft peaks form using a hand mixer or whisk.
02 - In another bowl, whisk the mascarpone with the remaining sugar and vanilla extract until smooth.
03 - Gently fold the whipped cream into the mascarpone mixture until fully incorporated and uniform.
04 - If using, toss the fresh raspberries with raspberry liqueur in a small bowl to coat evenly.
05 - Quickly dip each ladyfinger into the cooled coffee, ensuring absorption without becoming saturated or falling apart.
06 - Arrange half of the coffee-dipped ladyfingers in a single layer at the bottom of an 8x8 inch baking dish.
07 - Spread half of the mascarpone cream mixture evenly over the ladyfingers using a spatula.
08 - Scatter half of the prepared raspberries across the cream layer.
09 - Repeat the layering process with remaining ladyfingers, mascarpone cream, and raspberries.
10 - Cover the dish with plastic wrap and refrigerate for at least 4 hours or overnight to allow flavors to develop properly.
11 - Dust the top generously with powdered sugar using a sifter and garnish with additional fresh raspberries and mint leaves if desired.