There’s something about a lemon bar that feels like coming home.
Maybe it’s the buttery shortbread crust, the bright lemon filling, or that snowy dusting of powdered sugar that somehow ends up on the counter, your fingertips, and probably your shirt, too. These are the lemon bars I remember, the kind that appeared at family gatherings, tucked into cookie tins, or waiting on the dessert table alongside all the other classics.
They’re simple, old-fashioned, and wonderfully unfussy. The crust is rich and buttery, the lemon layer is perfectly sweet-tart, and every bite has that little spark of sunshine that keeps you reaching for another.
Some recipes are worth keeping exactly as they are. This is one of them.
A Few Notes Before You Make This Lemon Bars
- For the crust, using cold butter and cutting it into the flour, rather than creaming softened butter helps create a classic shortbread texture.
- Press evenly using your hands or the bottom of a measuring cup to press the crust evenly into the pan.
- Always pre-bake the crust to ensure it stays firm when the filling is added. Do not skip this step.
- Gently whisk the filling until smooth. Over-whisking incorporates air, which can create a bubbly top when baked. The cornstarch stabilizes the filling, by helping it set with a smooth, texture while retaining a custard-like consistency.
- Adding the filling while the crust is still hot helps prevent separation between the layers.
- Don’t over bake! Pull the bars when the center is just set and the edges are lightlygolden. They will continue to firm up as they cool.
- Chilling the bars before slicing is essential for clean cuts. The bars may seem soft when warm, but will firm up in the fridge.
How to Make Lemon Bars
Lets be honest, its simple mix, pour, bake, cool, cut and dust these babies with powdered sugar! The specifics and everything else in right in the printable recipe card at the end of the post.
Serving Notes
Powdered Sugar: Dust with powdered sugar right before serving, especially if storing in the fridge. Moisture in the bars will dissolve the sugar if applied too early.
Clean Cuts: Use a sharp knife and wipe it clean between slices for bakery-style bars.
Storage: Keep covered in the refrigerator for up to 4-5 days.
They freeze well, too (skip the powdered sugar until serving). Wrap the lemon bars tightly in plastic wrap and foil (or you can use an airtight container). Freeze for up to 2-3 months. Thaw in the refrigerator overnight and dust with powdered sugar before serving.
Some Common Questions
Can I use bottled lemon juice? Yes you can, but fresh lemon juice is highly recommended for the best flavor. Bottled juice often lacks brightness and can taste metallic or flat.
My bars puffed up or cracked-what happened? This usually happens if the filling was over mixed or baked too long. To avoid puffing, whisk the filling gently and don’t let it get frothy. Remove from the oven as soon as the center is just set.
Lemon Bars
Equipment
- 9×13 baking pan
- Parchment paper
- Large mixing bowl (for the crust)
- Medium mixing bowl (for the filling)
- Whisk
- Pastry cutter (to cut butter into the crust)
- Citrus zester and juicer (for lemon zest and lemon juice)
- Measuring cups and spoons
- Rubber spatula
- Knife (for cutting the bars once they are cool)
- Sifter (for dusting powdered sugar)
Ingredients
Crust
- 1 cup (2 sticks )unsalted cold butter
- ½ cup granulated sugar
- 2 ¼ cups all-purpose flour
- ¼ teaspoon salt
Filling
- 2 cups granulated sugar
- ⅓ cup all-purpose flour
- 2 tablespoons cornstarch
- 5 each large eggs
- 1 tablespoon lemon zest about 1-2 lemons
- 1 cup freshly squeezed lemon juice about 4-5 lemons
- 1 pinch salt
Topping
- Powdered sugar for dusting
Instructions
- Preheat the oven to 350°F. Line a 9×13 inch baking pan with parchment, leaving a little overhang on the sides for easy removal. It makes removal and cleaning up so much easier.
- Make the crust:
- In a large bowl, whisk together the flour, sugar, and salt. Add in the cold butter using a pastry cutter or your fingers until the mixture resembles coarse crumbs. (You can cut the butter into small cubes to help add into the flour mixture).
- Press the dough evenly into the prepared pan.
- Bake for 20-22 minutes, or until the edges are just starting to turn golden. Remove from the oven but leave the oven on.
- Mix the filling:
- While the crust bakes, whisk together the sugar, flour, and cornstarch in a medium bowl.
- Add the eggs, lemon zest, lemon juice, and salt. Whisk gently until fully combined but not frothy, this keeps the top smooth and prevents bubbles.
- Pour the filling over the hot crust and return the pan to the oven. Bake for 30-35 minutes, or until the center is just set and no longer jiggles when gently shaken.
- Cool and Chill:
- Remove from oven, and let the bars cool completely at room temperature, then refrigerate for at least 1-2 hours before slicing. This ensures clean edges and a firm filling. Wipe the knife between cuts for the cleanest edges.
- Dust the top lightly with powdered sugar after cutting into squares or bars.
