01 - Combine crushed cookies and melted butter in a bowl. Press firmly into the bottom of a 9x13 inch dish. Refrigerate while preparing the next layer.
02 - Combine blueberries, sugar, lemon juice, and water in a saucepan. Cook over medium heat until berries burst. Whisk cornstarch with a splash of water to form a slurry, then stir into the berry mixture. Simmer until thickened, about 2 minutes. Allow to cool completely.
03 - Beat cream cheese with powdered sugar until smooth. Add lemon zest and juice, mixing well. In a separate bowl, whip cold heavy cream to stiff peaks. Gently fold the whipped cream into the lemon mixture until just combined.
04 - Spread half of the lemon cream over the chilled cookie crust. Gently spread half the blueberry sauce over the cream. Repeat with the remaining lemon cream and blueberry sauce.
05 - Cover and refrigerate for at least 4 hours, or overnight for the cleanest slices.
06 - Spread whipped cream over the top and garnish with fresh blueberries and lemon zest before serving.