01 - Preheat the oven to 340°F. Grease a 9-inch springform pan and line the bottom with parchment paper.
02 - Layer 6 sheets of phyllo dough into the bottom of the prepared pan, brushing each sheet generously with melted butter. Scatter half of the pistachio-walnut-sugar-cinnamon mixture evenly over the layered phyllo. Repeat with the remaining 6 sheets, brushing each with butter, and top with the rest of the nut mixture. Press gently to compact.
03 - Bake the crust for 10 minutes until lightly golden. Remove from the oven and let it cool slightly while preparing the filling.
04 - Using an electric mixer, beat the softened cream cheese until completely smooth. Add the Greek yogurt, sugar, and lemon zest, mixing until uniformly combined. Incorporate the eggs one at a time, beating thoroughly after each addition. Stir in the vanilla extract until just blended — avoid overmixing.
05 - Pour the cheesecake filling over the par-baked baklava crust. Gently tap the pan on the counter to release trapped air bubbles. Bake at 340°F for 45 minutes, or until the center is just set with a slight wobble when gently shaken.
06 - Turn off the oven and crack the door open slightly. Let the cheesecake rest inside for 1 hour to cool gradually, which helps prevent cracks.
07 - Transfer the cheesecake to the refrigerator and chill for at least 3 hours, or preferably overnight, until fully set.
08 - In a small saucepan, combine the honey, water, sugar, and lemon juice. Warm over low heat, stirring until the sugar dissolves completely. Simmer gently for 3–4 minutes, then remove from heat and let cool to room temperature.
09 - Pour the cooled syrup over the chilled cheesecake, allowing it to drizzle into any natural crevices. Scatter the chopped pistachios evenly over the top. Slice into 10 portions and serve.