01 - Preheat 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. Sprinkle half of the combined pistachio-walnut-sugar-cinnamon mixture evenly over the layered sheets.
03 - Layer the remaining 6 phyllo sheets on top, brushing each with melted butter. Spread the remaining nut mixture over the final sheet and gently press everything down to compact the layers.
04 - Bake the crust for 10 minutes until lightly golden. Remove from the oven and let cool slightly while preparing the filling.
05 - Using an electric mixer, beat the softened cream cheese on medium speed until completely smooth and free of lumps. Add Greek yogurt, sugar, and lemon zest, mixing until fully incorporated.
06 - Add eggs one at a time, beating well after each addition on low speed to avoid incorporating excess air. Stir in the vanilla extract until just combined.
07 - Pour the cheesecake filling over the cooled baklava crust. Tap the pan gently on the counter a few times to release any trapped air bubbles. Bake at 340°F for 45 minutes, or until the edges are set and the center has a slight jiggle.
08 - Turn off the oven and crack the door open slightly. Leave the cheesecake inside for 1 hour to cool gradually — this prevents cracking on the surface.
09 - Transfer the cheesecake to the refrigerator and chill for at least 3 hours, or preferably overnight, until fully set.
10 - In a small saucepan, combine honey, water, sugar, and lemon juice. Heat gently over medium-low, stirring until the sugar dissolves completely. Simmer for 3-4 minutes, then remove from heat and let cool to room temperature.
11 - Pour the cooled syrup evenly over the chilled cheesecake. Sprinkle chopped pistachios across the top. Slice into 10 portions and serve.