2. Make the Cheesecake Filling
Beat cream cheese until smooth and creamy.
Add sugar and cornstarch; mix until fully incorporated.
Add eggs one at a time, mixing gently between each to avoid overbeating.
Stir in heavy cream, vanilla, lemon juice, and zest (if using).
Mix until the batter is silky and lump-free.
3. Bake the Bars
Preheat oven to 160°C (320°F).
Pour the filling over the chilled crust and smooth the top.
Tap the pan gently to release air bubbles.
Bake for 45–50 minutes, until edges are set and the center has a slight wobble.
Turn off the oven, crack the door, and let the bars cool inside for 30 minutes to prevent cracking.
4. Chill and Serve
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