Whip the heavy cream in a chilled bowl until soft peaks form
In a separate bowl, mix mascarpone, powdered sugar, lemon zest, and vanilla until smooth
Fold the whipped cream gently into the mascarpone mixture to create the lemon raspberry tiramisu filling
In a saucepan, simmer raspberries, sugar, and lemon juice for 5–7 minutes until thickened, then let cool
Quickly dip each ladyfinger into lemon syrup or limoncello and layer into a glass dish
Spread half the lemon cream over the ladyfingers and top with half the raspberry compote
Repeat with remaining ladyfingers, cream, and compote
Refrigerate the lemon raspberry tiramisu for at least 6 hours or overnight for best results
Before serving, garnish with fresh raspberries, lemon zest, and optional white chocolate curls or mint