01 - Preheat the oven to 400°F (200°C). Line two baking sheets with parchment paper.
02 - Place puff pastry sheets on the prepared baking sheets. Prick all over with a fork to prevent excessive puffing. Cover with another sheet of parchment and a second baking sheet to weigh down.
03 - Bake for 15–18 minutes until golden and crisp. Remove the top sheet and parchment, and cool completely.
04 - While the pastry cools, combine ricotta, powdered sugar, lemon zest, lemon juice, and vanilla in a medium bowl. Whisk until smooth.
05 - In a separate bowl, whip heavy cream until soft peaks form. Gently fold into the lemon ricotta mixture until fully incorporated. Chill until ready to use.
06 - Once the pastry is cool, carefully trim the edges and cut each sheet into 3 equal rectangles (6 pieces total).
07 - Place one pastry layer on a serving plate. Spread with one-third of the ricotta mixture. Repeat with another pastry sheet and ricotta layer, finishing with a final puff pastry sheet on top.
08 - Lightly dust the top with powdered sugar and garnish with lemon zest curls if desired.
09 - Chill for at least 30 minutes for easy slicing. Serve cold.