01 - Preheat oven to 320°F. Line the base of a 9-inch springform pan with parchment paper.
02 - Mix crushed cookies with melted butter until well combined. Press mixture firmly into the base of the prepared pan. Chill in refrigerator while preparing the filling.
03 - In a large bowl, beat cream cheese and sugar until completely smooth and creamy, approximately 2-3 minutes.
04 - Add cornstarch to the cream cheese mixture and mix until fully incorporated, scraping down the sides of the bowl as needed.
05 - Blend in sour cream, eggs one at a time, vanilla extract, and lemon zest. Mix until just combined—take care not to overbeat as this can incorporate excess air and cause cracking.
06 - Pour filling over the chilled crust. Smooth the top with an offset spatula, ensuring even distribution.
07 - Bake for 50-60 minutes until edges are set but the center still has a slight wobble when gently shaken.
08 - Turn off the oven and crack the door open. Let the cheesecake cool inside for 1 hour to prevent sudden temperature changes that cause cracks.
09 - Remove from oven and cool completely at room temperature, then cover and refrigerate for at least 4 hours, preferably overnight for best texture.
10 - Before serving, arrange mini chocolate Easter eggs on top. Drizzle with melted white chocolate if using. Release springform ring, slice, and serve chilled.