01 - Gently mash 10.6 oz raspberries with 2 tbsp granulated sugar and 1 tbsp lemon juice in a medium bowl. Set aside for 10 minutes to macerate and release natural juices.
02 - Beat cold heavy cream in a large bowl until soft peaks form. Add mascarpone cheese, powdered sugar, and vanilla extract. Gently fold together until smooth and creamy, being careful not to overmix.
03 - Combine cooled coffee and raspberry liqueur (if using) in a shallow dish. The liqueur adds depth but can be omitted for a non-alcoholic version.
04 - Quickly dip each ladyfinger in the coffee mixture just long enough to moisten without soaking. Arrange a single layer of dipped ladyfingers in the bottom of an 8x8 inch serving dish.
05 - Spoon half of the macerated raspberries over the ladyfingers, spreading evenly to cover the entire surface.
06 - Spread half of the mascarpone cream mixture over the raspberry layer, creating an even, smooth surface with a spatula.
07 - Add a second layer of coffee-dipped ladyfingers, ensuring complete coverage of the cream beneath.
08 - Top with remaining macerated raspberries, followed by the rest of the mascarpone cream. Smooth the surface thoroughly for an even presentation.
09 - Cover tightly with plastic wrap and refrigerate for at least 4 hours, though overnight chilling yields the best texture and flavor integration.
10 - Just before serving, arrange fresh raspberries on top, dust generously with powdered sugar, and add mint leaves if desired for a fresh accent.