Desserts / Cookies, bars & fudge
Lemon Bars with a Buttery Shortbread Crust
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Rub the zest into the sugar and the whole kitchen smells like lemon. A buttery shortbread crust, a sharp, silky filling, and a dusting of powdered sugar that ends up down everyone's front.
The short version
Press a flour, butter and powdered sugar crust into an 8-inch pan and bake at 350°F until golden. While it's hot, pour over a quick whisked lemon filling and bake until the center no longer jiggles. Cool completely, chill, cut, and dust with powdered sugar.
What makes ours better
the tricks Nonna pretends she never taught me
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Rub the zest into the sugar. Working the zest into the sugar with your fingers releases the lemon oils, so the flavor runs through the whole filling instead of hiding in flecks.
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Par-bake the crust, then fill it right away. A baked crust is a barrier that keeps the filling from soaking in, and a hot crust gets the filling cooking from the bottom. You get a crisp base all the way through.
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Fresh juice only, plus a pinch of salt. Bottled juice is flat and slightly bitter. A pinch of salt sharpens the lemon and keeps the sweetness in check.
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Chill before you cut. A cold bar slices clean. Warm lemon filling smears and the crust cracks.
What you need
the cast, in order of appearance
- All-purpose flour1 cup
- Powdered sugar¼ cup
- Unsalted butter½ cup
- Finely grated lemon zest1 tablespoon
- Eggs3 large
Crust
Lemon filling
read it twice. buy it once.
Steps
nobody opens the oven door. looking at you, Dad.
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Prep the pan
Heat the oven to 350°F with a rack in the middle. Line an 8-inch square pan with a strip of parchment that hangs over two opposite sides, so you can lift the bars out.
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Make the crust
In a bowl, stir the flour, powdered sugar and salt. Add the cold butter and rub it in with your fingertips, or pulse in a food processor, until the mixture looks like damp sand and clumps when squeezed. Press it evenly into the bottom of the pan.
Use the bottom of a measuring cup to level it. A thick patch of crust won't bake through.
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Bake the crust
Bake until the edges are golden brown and the center looks dry, 18 to 22 minutes. Leave the oven on.
About 18 min. Cook mode has a timer for this step.
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Make the filling
While the crust bakes, put the sugar and zest in a bowl and rub them together with your fingers until the sugar is damp and fragrant. Whisk in the eggs, then the lemon juice and salt. Sift in the flour and whisk until completely smooth.
Zest the lemons before you juice them. A squeezed lemon is nearly impossible to zest.
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Fill and bake
Pour the filling over the hot crust. Bake until the filling is set and the center no longer jiggles when you nudge the pan, 30 to 35 minutes. The top will be pale gold.
About 30 min. Cook mode has a timer for this step.
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Cool and chill
Cool the pan on a rack for about 1 hour, then refrigerate for at least 2 hours.
About 60 min. Cook mode has a timer for this step.
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Cut and serve
Lift the slab out using the parchment. Trim the edges if you like. Cut into 16 bars with a sharp knife dipped in hot water and wiped dry between cuts. Dust with powdered sugar just before serving.
Dust at the last minute. Powdered sugar melts into the surface within an hour.
Good to know
the stuff I’d tell you over the phone
- Fresh lemons are essential here. Bottled juice and dried zest make a duller bar.
- A glass or light metal pan works best. A dark metal pan can brown the edges before the center sets.
- Make them a day ahead. They cut cleaner and taste brighter after a night in the fridge.
- Storage. Covered in the fridge, 4 days. Freeze cut bars, wrapped well, up to 2 months; thaw in the fridge. Dust with powdered sugar after thawing.
Questions, answered
the questions my cousins text me
Why are my lemon bars runny in the middle?
They were underbaked. The filling should barely move when you nudge the pan, and it will firm up more as it cools. Don't cut until the pan is cold.
Why did my crust get soggy?
The crust wasn't baked first, or the filling sat too long before it went in the oven. Bake the crust until golden, and pour the filling over it while it's still hot.
Can I use bottled lemon juice?
You can, but the bars taste noticeably duller. Fresh juice is the main source of flavor here, so squeeze it.
Why is the top of my lemon bars brown or wrinkled?
They baked too long or the oven is running hot. Pull them as soon as the center is set, and check your oven with a thermometer.
How do I get clean lemon bars?
Chill them completely, then cut with a long knife dipped in hot water and wiped dry between cuts.
Can I make lemon bars in a 9x13-inch pan?
Yes. Double everything and bake both layers a few minutes longer, going by the cues (golden crust, filling that no longer jiggles) rather than the clock.
From the table
Made it? I want the full report: first bite, best compliment, and who tried to take the leftovers home.
Made it?
be honest. I can take it. probably.
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Published October 29, 2026.