Preheat the oven to 350°F (175°C). Line a 9x13-inch (23x33 cm) pan with parchment paper, leaving overhang on the sides for easy removal. Lightly spray with nonstick spray.
cooking spray
Add the graham crackers to a food processor and pulse into fine crumbs. Add the sugar and pulse to combine. Drizzle in the melted butter and pulse until the mixture resembles damp sand. Transfer to the prepared pan, pressing firmly into an even layer and into the corners using the bottom of a measuring cup. Bake the crust for 10 minutes. Remove from the oven and let cool slightly. Reduce the oven temperature to 325°F (163°C).
1 (14.4 oz / 408 g) box graham crackers, 3 tbsps (38 g) granulated sugar, ¾ cup (170 g) unsalted butter
In a microwave-safe bowl, combine the white chocolate chips and heavy cream. Microwave for 30 seconds, stir, then continue in 15-second intervals until smooth. Stir until fully melted and glossy, then set aside to cool slightly.
9 oz (255 g) white chocolate chips, ¼ cup (57 g) heavy cream
In a large bowl, beat the cream cheese, sugar, and flour on low speed until smooth and fully combined. Keeping the mixer on low prevents excess air, which helps avoid cracking and keeps the texture dense and smooth.
4 packages (32 oz / 908 g total) full-fat cream cheese, ¾ cup (151 g) granulated sugar, 3 tbsps (23 g) all-purpose flour
Add the slightly cooled white chocolate mixture and lemon emulsion, mixing on low until incorporated. The white chocolate softens the sharpness of the lemon and creates a more cohesive, creamy texture than standard cheesecake bars.
1 tbsp (15 ml) lemon emulsion*
Add the eggs and egg yolks one at a time, mixing on low speed just until each is incorporated. Do not overmix. Overmixing can introduce air, which affects the end result.
3 large eggs
Using a spatula, gently fold in ¾ cup (180 g) of the lemon curd until the batter is smooth. This builds lemon flavor directly into the base instead of relying only on surface flavor.
1¼ cups (300 g) lemon curd
Pour the cheesecake batter over the crust and spread evenly into the corners. Dollop the remaining ½ cup (120 g) lemon curd over the top. Use a toothpick or knife to gently swirl it into the batter, creating visible ribbons without fully blending.
Bake at 325°F (163°C) for 42–45 minutes. The edges should look set and slightly puffed, while the center will have a slight jiggle.
For the most accurate doneness, the internal temperature should reach 150–155°F (65–68°C). This guarantees a fully set cheesecake that stays creamy and slices neatly without becoming dry.
Remove from the oven and let cool at room temperature, then refrigerate for at least 2 hours or until fully chilled. Chilling allows the bars to fully set for bakery-style slices.
To make the whipped cream, combine the cold heavy cream, confectioners' sugar, and lemon curd in a chilled bowl. Beat until stiff peaks form.
½ cup (120 ml) heavy cream, ¼ cup (28 g) confectioners' sugar, 1 tbsp (15 g) lemon curd
Lift the cheesecake from the pan using the parchment overhang. Slice into bars using a clean, sharp knife, wiping between cuts for neat edges.
Top with whipped cream (use a piping bag if you like or just dollop on) and lemon slices, or serve as-is to highlight the lemon curd swirl.