Recipe
Servings
16 squares in a 9-inch square pan. The preparation is straightforward: bake the crust, pour over the lemon filling, bake again, then chill until firm enough to slice. 1×
Serves 16 squares in a 9-inch square pan. The preparation is straightforward: bake the crust, pour over the lemon filling, bake again, then chill until firm enough to slice.Prep 20 minCook 35 minTotal 2H55 min
Ingredients
- The recipe uses common baking ingredients, but fresh lemons are essential. Bottled lemon juice does not provide the same aroma or depth because it lacks the oils from fresh zest.
Method
- Prepare the pan. Heat the oven to 350°F (180°C). Line a 9-inch square baking pan with parchment paper, leaving enough overhang on two sides to lift the finished bars out easily.
- Make the shortbread mixture. In a medium bowl, combine the flour, powdered sugar, and salt. Add the melted butter and stir until the mixture forms soft, evenly moistened crumbs.
- Bake the crust. Press the mixture firmly and evenly into the base of the prepared pan. Use the bottom of a glass or measuring cup to compact the surface. Bake for 15 to 17 minutes, or until the edges are lightly golden.
- Mix the filling. While the crust bakes, whisk the granulated sugar, flour, and salt in a clean bowl. Add the eggs and whisk just until smooth. Stir in the lemon juice and zest. Avoid vigorous whisking, which can add unnecessary air bubbles.
- Add the lemon layer. Remove the crust from the oven and immediately pour the lemon mixture over the hot crust. Pour slowly to prevent the filling from disturbing the base.
- Bake again. Return the pan to the oven and bake for 18 to 20 minutes. The filling should look set around the edges and have only a slight movement in the centre when the pan is gently nudged.
- Cool and chill. Cool the bars in the pan for 1 hour. Refrigerate for at least 2 hours, or until thoroughly chilled and firm.
- Slice and serve. Lift the chilled slab out using the parchment overhang. Dust with powdered sugar, then cut into 16 bars using a sharp knife. Wipe the knife between cuts for cleaner edges.
Homemade Lemon Bars (Tangy & Sweet)
These homemade lemon bars combine a crisp, buttery shortbread crust with a smooth lemon layer that is bright, tangy, and sweet. Fresh lemon juice and zest give the filling a clear citrus flavour, while a light dusting of powdered sugar balances the sharpness.
This easy lemon bars recipe makes 16 squares in a 9-inch square pan. The preparation is straightforward: bake the crust, pour over the lemon filling, bake again, then chill until firm enough to slice.
Ingredients
The recipe uses common baking ingredients, but fresh lemons are essential. Bottled lemon juice does not provide the same aroma or depth because it lacks the oils from fresh zest.
For the crust
- 1 ½ cups (190 g) all-purpose flour
- ⅓ cup (40 g) powdered sugar
- ½ cup (113 g) unsalted butter, melted
- ¼ teaspoon fine salt
For the lemon filling
- 1 ½ cups (300 g) granulated sugar
- ⅓ cup (43 g) all-purpose flour
- 4 large eggs
- ⅔ cup (160 ml) freshly squeezed lemon juice
- Finely grated zest of 2 lemons
- ¼ teaspoon fine salt
For finishing
- Powdered sugar, for dusting
Method
Prepare the pan. Heat the oven to 350°F (180°C). Line a 9-inch square baking pan with parchment paper, leaving enough overhang on two sides to lift the finished bars out easily.
Make the shortbread mixture. In a medium bowl, combine the flour, powdered sugar, and salt. Add the melted butter and stir until the mixture forms soft, evenly moistened crumbs.
Bake the crust. Press the mixture firmly and evenly into the base of the prepared pan. Use the bottom of a glass or measuring cup to compact the surface. Bake for 15 to 17 minutes, or until the edges are lightly golden.
Mix the filling. While the crust bakes, whisk the granulated sugar, flour, and salt in a clean bowl. Add the eggs and whisk just until smooth. Stir in the lemon juice and zest. Avoid vigorous whisking, which can add unnecessary air bubbles.
Add the lemon layer. Remove the crust from the oven and immediately pour the lemon mixture over the hot crust. Pour slowly to prevent the filling from disturbing the base.
Bake again. Return the pan to the oven and bake for 18 to 20 minutes. The filling should look set around the edges and have only a slight movement in the centre when the pan is gently nudged.
Cool and chill. Cool the bars in the pan for 1 hour. Refrigerate for at least 2 hours, or until thoroughly chilled and firm.
Slice and serve. Lift the chilled slab out using the parchment overhang. Dust with powdered sugar, then cut into 16 bars using a sharp knife. Wipe the knife between cuts for cleaner edges.
Recipe
Homemade Lemon Bars
- Servings: 16 bars
- Prep time: 20 minutes
- Cook time: 35 minutes
- Total time: 55 minutes, plus at least 2 hours chilling
- Pan: 9-inch square baking pan
- Oven temperature: 350°F (180°C)
These lemon bars are ready when the lemon layer is set but still tender. Do not wait for the centre to become completely firm in the oven. It will continue to set as the bars cool and chill.
Tips
Use unwaxed lemons when possible. The recipe uses lemon zest, so wash and dry the lemons before grating. Remove only the yellow outer layer. The white pith underneath is bitter.
Measure flour accurately. Spoon flour into a measuring cup and level the top, or use a kitchen scale. Excess flour can make both the crust and filling dense.
Press the crust firmly. A loosely packed crust may crumble when the bars are sliced. Compact it evenly, particularly in the corners.
Pour the filling over a hot crust. This helps the two layers join together and reduces the chance of a gap forming between the crust and lemon topping.
Do not overbake. Overbaked lemon bars can develop a rubbery texture. Remove them when the centre has a small, controlled wobble.
Chill before cutting. Warm bars are soft and difficult to portion neatly. A full chill produces a cleaner cut and a smoother texture.
Dust just before serving. Powdered sugar can gradually dissolve into the moist lemon surface. Add it immediately before serving for the clearest finish.
Use a sharp knife. A chef’s knife or straight-edged slicing knife works best. Clean and dry it after each cut.
Variations
Extra-tangy lemon bars: Reduce the granulated sugar to 1 ¼ cups and add the zest of a third lemon. The result will have a sharper citrus profile.
Thicker lemon layer: Bake the recipe in an 8-inch square pan. The bars will be taller, and the filling may require a few additional minutes in the oven. Check for the same slight centre wobble.
More pronounced lemon flavour: Rub the lemon zest into the granulated sugar with your fingertips before adding the flour and eggs. This releases the lemon oils into the sugar.
Crisper crust: Bake the crust for the full 17 minutes, or until the edges are clearly pale gold, before adding the filling. Do not let it become dark brown.
Neater presentation: Trim a thin strip from each outer edge before cutting the remaining slab into 16 equal bars. This removes uneven corners and exposes the layers.
Lemon-lime bars: Replace up to one-quarter of the lemon juice with freshly squeezed lime juice. Keep the lemon zest in the recipe so the result remains lemon-focused.
Storage
Store lemon bars in an airtight container in the refrigerator for up to 4 days. Place parchment paper between layers if stacking them. The powdered sugar may absorb moisture during storage, so dust each serving again before eating.
For longer storage, freeze the bars without powdered sugar for up to 2 months. Wrap individual bars in parchment and place them in a freezer-safe container. Thaw them overnight in the refrigerator, then add powdered sugar before serving.
FAQ
Why are my lemon bars runny?
The filling may be underbaked, or the bars may not have chilled long enough. Bake until the edges are set and the centre has only a slight wobble. Then refrigerate for at least 2 hours before slicing.
Can I use bottled lemon juice?
Fresh lemon juice is recommended because it provides a brighter flavour. Bottled juice can be used if necessary, but it will not replace the fragrance provided by fresh lemon zest.
Should lemon bars be refrigerated?
Yes. The egg-based lemon filling needs to be stored in the refrigerator. Chilling also improves the texture and makes the bars easier to cut.
Can I make lemon bars ahead of time?
Yes. Lemon bars can be prepared one day ahead and kept covered in the refrigerator. Add the powdered sugar shortly before serving.
Why did the powdered sugar disappear?
The surface of lemon bars is moist, so powdered sugar can dissolve over time. Dust the bars immediately before serving. For a heavier finish, apply a second layer after the first has settled.
How do I prevent a gap between the crust and filling?
Pour the filling over the crust while it is still hot. Also, avoid overbaking the crust before adding the lemon mixture. A hot, lightly golden crust gives the filling a better surface to adhere to.
Serve
Serve these lemon bars chilled or allow them to stand at room temperature for 10 to 15 minutes before eating. The crust will soften slightly, and the lemon filling will become more tender. For a classic finish, use only powdered sugar and a little fresh lemon zest.
For additional technique references, compare the guidance from Preppy Kitchen’s lemon bars recipe, Sally’s Baking Addiction lemon bars, and The Kitchn’s lemon bars recipe.
