These strawberry lemon bars feature a buttery crust and a vibrant, tangy filling. Easy to make, naturally fruity, and perfect for any occasion, they’re ideal for dessert, snacks, or meal prep. Dust with a sprinkle of confectioners’ sugar and enjoy a burst of fresh, zesty flavor in every square.
Prepare the Oven and Pan: Begin by arranging your oven rack in the center position and preheating the oven to 350°F (175°C). While the oven warms, lightly grease a 13" x 9" baking dish with cooking spray to ensure your bars don’t stick. Line the dish with parchment paper, leaving an overhang on two opposite long sides. This overhang will make lifting the baked bars out of the pan much easier later.
Combine Sugar, Lemon, and Salt: In a large mixing bowl, combine 1/2 cup plus 1 tablespoon of granulated sugar, 1 teaspoon of finely grated lemon zest, and 1/4 teaspoon of kosher salt. Using clean fingers or a fork, gently rub these ingredients together for about 1 minute until fragrant. This step releases the natural oils from the lemon zest, enhancing the citrus flavor throughout the crust.
Mix in Flour and Butter for Crust: Add 2 1/2 cups (300 g) of all-purpose flour to the sugar mixture. Pour in 1 cup plus 2 tablespoons (240 g) of melted unsalted butter. Using a rubber spatula, stir until the mixture starts coming together into a wet, crumbly dough. The dough should hold together when pressed but remain soft enough to spread evenly.
Press Crust Into Pan: Transfer the dough into your prepared baking dish. Use clean fingertips or the back of a measuring cup to press the dough evenly across the bottom of the pan. Make sure the layer is uniform so the bars bake evenly. This even pressing ensures a golden, crisp crust without gaps or thin spots.
Bake the Crust: Place the pan in the preheated oven and bake the crust for 20 to 25 minutes, or until it turns golden in the center. While the crust bakes, you can prepare the filling. Once done, remove the pan from the oven and allow the crust to cool for 20 minutes. After cooling, reduce the oven temperature to 325°F (165°C) in preparation for baking the filling.
Process Strawberries for Filling: In a food processor, combine 1 1/2 cups (8 oz) fresh hulled strawberries, 1 1/2 cups (300 g) granulated sugar, 3 tablespoons cornstarch, 1 tablespoon finely grated lemon zest, 1 1/2 cups fresh lemon juice, and 1/2 teaspoon kosher salt. Process until the strawberries are completely broken down and the mixture is mostly smooth. A few small strawberry bits are fine—they add a natural texture to the filling.
Whisk Eggs and Yolks: In a medium bowl or a large measuring cup, whisk together 4 large eggs and 3 large egg yolks until smooth and homogeneous. The eggs should be fully blended with no streaks of white or yolk remaining. This will ensure a consistent, silky texture in the filling.
Combine Eggs with Strawberry Mixture: Add the whisked eggs and yolks to the strawberry mixture in the food processor. Process briefly until fully combined. The resulting mixture will be liquid but evenly blended. Pour this strawberry-egg mixture over the pre-baked crust in the baking dish. Be gentle to avoid disturbing the crust layer.
Bake the Bars: Carefully transfer the baking dish to the oven. Bake at 325°F (165°C) for 30 to 40 minutes. The bars are done when the edges are set and the center is slightly jiggly—like a soft custard. Avoid overbaking, as this can dry out the filling.
Cool Completely: Remove the pan from the oven and allow the bars to cool at room temperature. Cooling is crucial for the filling to fully set. This may take 1 to 2 hours, depending on your kitchen temperature. Once cooled, use a knife to loosen the bars from the short ends of the pan.
Lift and Dust Bars: Using the parchment paper overhang, carefully lift the baked bars out of the pan and transfer them to a cutting board. Sift a light layer of confectioners’ sugar over the top of the bars for a beautiful, professional finish.
Slice and Serve: Using a sharp knife, cut the bars into even squares—usually 12 to 16 depending on your preferred size. For clean edges, wipe the knife with a damp cloth between cuts. Serve immediately or store for later. These bars are perfect for dessert, snacks, or sharing at gatherings.
Notes
Use ripe, sweet strawberries for the best flavor. Overly tart or underripe strawberries can affect the natural sweetness of the filling.
Freshly squeezed lemon juice yields the brightest, most vibrant flavor. Bottled lemon juice may work in a pinch but will slightly reduce freshness.
The crust can be made a day in advance and stored covered at room temperature to save prep time.
For even bars, let the crust and filling cool completely before cutting. Wiping the knife between cuts ensures clean edges.
Confectioners’ sugar dusting is optional but adds a lovely finishing touch and slight sweetness to balance the tart lemon.