Ingredients
Equipment
Method
- Step 1: Preheat oven to 325°F (165°C) and position rack in the middle of the oven. Line an 8×8 inch (20×20cm) light-colored aluminum baking pan with two criss-crossed strips of parchment paper, each with a 2-inch (5cm) overhang on all sides. Press parchment firmly into the corners.
- Step 2: In a medium bowl, combine graham cracker crumbs, granulated sugar, and fine sea salt. Stir with a fork until evenly distributed. Pour in melted cooled butter and stir until every crumb is coated and the mixture holds together when pinched. Transfer to the lined pan and press firmly into an even compact layer using the flat bottom of a dry measuring cup, pressing firmly into corners and edges.
- Step 3: Bake the crust at 325°F (165°C) for 12–15 minutes until the surface looks matte and dry. Transfer to a wire cooling rack and cool for a minimum of 15 minutes before adding the filling.
- Step 4: Place room-temperature block cream cheese in a large mixing bowl. Beat with a hand mixer or stand mixer fitted with the paddle attachment on medium speed for 2 full minutes, scraping the bowl after 1 minute, until completely smooth with no lumps visible anywhere.
- Step 5: With the mixer on low speed, pour in the sweetened condensed milk in a slow steady stream. Increase to medium speed and beat for 30 seconds. Scrape the bowl. Add lemon zest, fresh lemon juice, and vanilla extract. Mix on low for 10 seconds. Add eggs one at a time, beating on low speed for no more than 10 seconds after each addition, just until the yolk disappears. Scrape the bowl and fold once with a silicone spatula to ensure nothing is hiding at the bottom.
- Step 6: Pour the filling over the cooled crust in a slow steady stream starting from the center. Use a silicone spatula to guide it gently into the corners. Tap the pan on the counter 3 times to release surface bubbles. Bake at 325°F (165°C) for 20–25 minutes until the edges are set and slightly puffed and the center has a slow cohesive jiggle when the pan is gently shaken.
- Step 7: Remove from oven and cool on a wire rack at room temperature for 1 full hour. Do not move to the refrigerator before the hour is complete. After 1 hour, cover loosely with plastic wrap and refrigerate for a minimum of 4 hours, preferably overnight.
- Step 8: Use the parchment overhang to lift the slab from the pan onto a cutting board. Slice into 16 equal squares using a sharp chef's knife warmed briefly under hot water and wiped completely clean and dry between every cut. Score lightly before cutting all the way through. Garnish with piped whipped cream, fresh lemon slices, and lemon zest curls immediately before serving.
Notes
Cream cheese: Must sit at room temperature for 60–90 minutes before mixing — press your finger firmly into the block before starting. It should leave a clean indent with no resistance and feel uniformly soft throughout.
Condensed milk: Sweetened condensed milk only — not evaporated milk. Full-fat. These two cans look nearly identical on the shelf — check the label before opening.
Lemon juice: Fresh only — from approximately 3–4 medium lemons, strained. Bottled lemon juice produces a noticeably flatter flavor in a filling where lemon is the only flavor.
Eggs: Room temperature only. Warm in a bowl of lukewarm water for 10 minutes if cold.
Pan: 8×8 inch (20×20cm) light-colored aluminum. Dark pans over-brown the crust. Glass or ceramic: reduce oven temp by 25°F (15°C).
Parchment overhang: Mandatory — without it the bars cannot be lifted cleanly from the pan.
Chill time: 4 hours minimum — overnight produces the best texture and flavor. Do not cut before fully chilled.
Scaling: This recipe doubles into a 9×13 inch (23×33cm) pan for 24 squares. Filling bake time increases to 25–30 minutes. Crust bake time stays the same. Note: leavening is not a factor in this recipe — scaling is straightforward.
Altitude: Above 3,500 feet (1,067m) — reduce oven temperature by 10–15°F (5–8°C) and check filling 5 minutes early.
Humidity: In humid climates — toast crumbs at 350°F (175°C) for 5 minutes before mixing crust. Store finished bars in a fully sealed container.
Allergens: Contains gluten (graham crackers), dairy (butter, cream cheese, condensed milk), eggs. Not suitable for dairy-free or egg-free diets without significant reformulation.
Freezing: Freeze individually wrapped ungarished squares up to 2 months. Thaw overnight in refrigerator. Do not thaw at room temperature or microwave.