Lemon Bars Recipe – Easy, Buttery Shortbread & Fresh Lemon

These lemon bars sit on a tender, buttery shortbread crust and are topped with a smooth, bright lemon filling that bakes into a soft custard. They’re made in a 9×13-inch pan, so one batch cuts into 24 bars, and the whole thing is built from a short list of pantry ingredients plus fresh lemons.

Lemon Bars Recipe

The appeal is the contrast. The shortbread base is sweet and rich with butter, while the filling is tart enough from the lemon juice and zest to cut straight through it. Neither layer overwhelms the other, and a dusting of powdered sugar on top softens the tartness just a little.

Two things decide whether the bars come out neat or messy: baking the filling only until it’s just set, with a slight jiggle left in the center, and chilling the pan before you slice. Get both right and the filling stays creamy while the squares cut cleanly.

What You’ll Need

For the shortbread crust

• 1 1/2 cups all-purpose flour
• 1/2 cup powdered sugar
• 1/4 teaspoon fine salt
• 3/4 cup unsalted butter, melted

For the lemon filling

• 4 large eggs
• 1 1/2 cups granulated sugar
• 1/4 cup all-purpose flour
• 2 tablespoons finely grated lemon zest
• 1/3 cup fresh lemon juice
• 1/4 teaspoon fine salt

For finishing

• Powdered sugar, for dusting

Equipment: 9×13-inch baking pan, parchment paper, mixing bowls, whisk, measuring cups and spoons, fine grater or zester, citrus juicer, rubber spatula, wire rack, sharp knife.

A few notes on ingredients:

• Lemons: About 3 lemons should cover both the zest and the juice. Zest them first, since a whole lemon is much easier to grate than one that’s already been squeezed.
• Melted butter: The crust uses melted butter, so there’s no creaming involved. It’s stirred into the dry ingredients until a soft dough forms.
• Flour in the filling: The 1/4 cup of flour is what helps the filling set into a sliceable custard rather than staying loose.

How to Make Lemon Bars

Step 1: Prepare the pan

Preheat the oven to 350°F. Line a 9×13-inch baking pan with parchment paper, leaving some overhang for easy removal. That overhang is what lets you lift the whole slab out of the pan later for cutting.

Step 2: Make the crust dough

Whisk together the flour, powdered sugar, and salt for the crust. Add the melted butter and stir until a soft, crumbly dough forms. Press it evenly into the prepared pan. It won’t look like a smooth cookie dough, so expect something soft and crumbly that holds together when you press it down. Pressing it to an even thickness helps the crust bake evenly.

Step 3: Bake the crust

Bake the crust for 18 to 20 minutes, until the edges are lightly golden and the center looks set. Remove from the oven.

Step 4: Make the lemon filling

While the crust bakes, whisk the eggs and granulated sugar until smooth. Whisk in the flour, lemon zest, lemon juice, and salt until fully combined. Having the filling ready before the crust comes out matters, since it goes on right away in the next step.

Step 5: Pour the filling over the hot crust

Pour the lemon filling over the hot crust immediately after it comes out of the oven. The heat from the crust helps the filling begin setting right away and keeps the liquid from soaking into the base, which helps the shortbread stay firm instead of turning soggy.

Step 6: Bake the filling and cool

Return the pan to the oven and bake for 20 to 25 minutes, until the edges are set and the center has only a slight jiggle. Cool completely on a wire rack. When you nudge the pan, the center should wobble slightly like a set custard rather than ripple like liquid. It keeps setting as it cools, so don’t wait for it to look completely firm in the oven.

Step 7: Chill, dust, and cut

Chill the cooled lemon bars for at least 1 hour. Lift them from the pan using the parchment, dust with powdered sugar, and cut into 24 bars.

Getting Clean Slices

The bars have to be fully cool before they go in the fridge, and then chilled before cutting. Warm filling is still soft, so slicing too early drags it and leaves you with runny, messy edges. An hour or more in the refrigerator firms the custard up so a knife can pass through it cleanly. The recipe calls for at least an hour, so chilling a bit longer is fine too.

A knife dipped in hot water and wiped dry before each cut works better than a dry one, because the warm blade glides through the filling instead of sticking to it. Wipe the blade clean between cuts so sugar and filling don’t smear onto the next bar. Cutting straight down, rather than sawing, keeps the layers neat. On a 9×13-inch slab, a grid of 4 by 6 gives you the 24 bars.

Storing Lemon Bars

Keep the bars in an airtight container in the refrigerator for up to about 5 days. If you’re stacking them, put parchment paper between the layers so the tops and edges stay clean.

Frequently Asked Questions

Why are my lemon bars runny?

Most often they were pulled from the oven before the filling had set, or they were cut before they’d chilled. The edges should be set and the center should have only a slight jiggle at the end of baking. After that, let the pan cool completely and chill it for at least an hour before slicing.

Why did the top of my lemon bars crack?

Baking the filling too long is the usual cause. The center keeps firming as it cools, so a filling baked until it’s completely rigid in the oven can crack on top once it’s out. Since ovens run differently, start checking toward the early end of the 20 to 25 minute window.

Can I use bottled lemon juice?

Fresh lemon juice is the better choice here. The filling is mostly lemon, so the flavor of the juice shows up clearly, and bottled juice tends to taste flat next to fresh. Because the recipe also uses 2 tablespoons of zest, you’ll have the lemons on hand anyway.

you can check more recipes from here