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. Press mixture firmly into the base of the prepared pan. Chill in the refrigerator while preparing the filling.
03 - In a large bowl, beat cream cheese and sugar until smooth. Add cornstarch and mix well.
04 - Blend in sour cream, eggs one at a time, vanilla extract, and lemon zest. Mix until just combined—do not overbeat.
05 - Pour filling over the prepared crust. Smooth the top with a spatula. Bake for 50-60 minutes, until edges are set but the center still has a slight wobble.
06 - Turn off the oven, crack the door, and let the cheesecake cool inside for 1 hour.
07 - Remove from oven and cool completely at room temperature, then cover and refrigerate for at least 4 hours or preferably overnight.
08 - Before serving, arrange mini chocolate Easter eggs on top. Drizzle with melted white chocolate if desired. Unlock the springform ring, slice, and serve.