A Recipe Card Worn Soft With Age

I found this version tucked in a flour-dusted recipe tin, the corners stained with butter and the lemon juice measurement written in faded pencil.

Learn more about DanyRecipes and why I treasure recipes like this one. These lemon bars from scratch taste just like they did decades ago.

Why Old-Fashioned Still Wins

Old-fashioned lemon bars keep things simple: a tender shortbread crust, a sweet-tart custard, and a generous snowfall of powdered sugar. There are no fancy tricks here, just honest ingredients and a method that has worked for generations.

This lemon bars recipe fits a standard 9×13 pan and uses pantry basics you probably already have. Among my favorite lemon desserts, it is the one that feels most like home, and it pairs well with my chewy thumbprint lemon curd cookies on a dessert table.

Ingredients From the Recipe Tin

For the crust:

• 2 cups all purpose flour
• 1/2 cup powdered sugar, plus extra for dusting
• 1/4 teaspoon fine salt
• 1 cup (2 sticks) cold unsalted butter, cubed

For the lemon filling:

• 2 cups granulated sugar
• 4 large eggs, at room temperature
• 1/2 cup fresh lemon juice, strained
• 2 tablespoons lemon zest, finely grated
• 1/4 cup all purpose flour
• 1/2 teaspoon baking powder, for a light, old-fashioned lift
• Pinch of salt

Bake It the Old Way

STEP 1

Heat the oven to 350°F and grease a 9×13 pan, then line it with parchment so the bars lift out cleanly.

STEP 2

Mix the flour, powdered sugar, and salt, then cut in the cold butter until the dough looks like coarse, crumbly sand.

STEP 3

Press the dough evenly into the pan and bake for 18 to 20 minutes until lightly golden.

STEP 4

Whisk the sugar, eggs, lemon juice, zest, flour, baking powder, and salt until smooth and well blended.

STEP 5

Pour the filling over the warm crust and bake for 22 to 26 minutes until the center is set with a gentle jiggle.

STEP 6

Cool on a rack, chill for at least 2 hours, then dust with powdered sugar and slice into squares.

Serving Ideas and Simple Twists

• Serve with hot tea or coffee for an afternoon visit.
• Top with a few fresh berries or a light dollop of whipped cream.
• Pair with my crispy shortbread lemon curd cookies for a buttery crunch beside the soft bars.
• Press a little finely grated lemon zest into the powdered sugar for a brighter dusting.
• Cut into small squares and tuck them into a tin for a neighborly gift.

Classic Old-Fashioned Lemon Bars From Scratch

These classic old-fashioned lemon bars feature a tender, buttery shortbread crust and a sweet-tart lemon custard filling with a touch of baking powder for a light texture. Finished with a generous dusting of powdered sugar, they bring the comforting flavor of a treasured vintage recipe to your dessert table.

Print Recipe Pin Recipe

Prep Time 20 minutes mins

Cook Time 46 minutes mins

Cooling and Chilling Time 2 hours hrs

Total Time 3 hours hrs 6 minutes mins

Servings: 24 bars

Course: Bars, Dessert

Cuisine: American

Ingredients Equipment Method Notes

Ingredients

  

Shortbread Crust

• 2 cups all-purpose flour
• 1/2 cup powdered sugar plus extra for dusting
• 1/4 tsp fine salt
• 1 cup unsalted butter 2 sticks, cold and cubed

Lemon Filling

• 2 cups granulated sugar
• 4 large eggs at room temperature
• 1/2 cup fresh lemon juice strained
• 2 tbsp lemon zest finely grated
• 1/4 cup all-purpose flour
• 1/2 tsp baking powder for a light, old-fashioned lift
• 1 pinch salt
• powdered sugar for dusting before serving

Equipment

• 9×13-inch Baking Pan
• Parchment paper
• Mixing bowls
• Whisk
• Pastry Cutter or Fork
• Zester
• Measuring Cups and Spoons
• Wire Cooling Rack
• Fine mesh sieve

Method

 

1. Preheat the oven to 350°F (175°C). Lightly grease a 9×13-inch baking pan, then line it with parchment paper, leaving an overhang on two sides for easy lifting.
2. Whisk together the flour, powdered sugar, and salt. Cut in the cold cubed butter with a pastry cutter or fork until the mixture resembles coarse, crumbly sand.
3. Press the crust mixture evenly into the prepared pan. Bake for 18 to 20 minutes, until lightly golden around the edges.
4. In a mixing bowl, whisk together the granulated sugar, eggs, fresh strained lemon juice, lemon zest, flour, baking powder, and pinch of salt until smooth and well blended.
5. Pour the lemon filling over the warm crust. Bake for 22 to 26 minutes, until the edges are set and the center has a gentle jiggle.
6. Transfer the pan to a wire rack and let the bars cool. Refrigerate for at least 2 hours, then lift them out using the parchment overhang. Dust generously with powdered sugar and slice into squares.

Notes

Pro Tips:

• Use fresh lemon juice for a bright, clean citrus flavor.
• Keep the butter cold when preparing the crust to help it bake up tender and crumbly.
• Pour the filling over the crust while it is still warm so the layers bond together.
• Remove the bars when the center still has a gentle wobble; the filling will firm up as it cools.
• Wipe your knife clean between cuts for neat edges.
• Dust with powdered sugar just before serving to keep the finish snowy white.

Serving Ideas: Serve with hot tea or coffee, fresh berries, or a small dollop of whipped cream. For a brighter finish, mix a little finely grated lemon zest into the powdered sugar before dusting. These bars also make lovely small gifts when cut into squares and packed in a tin.

Storage: Cover and refrigerate for up to 4 days, placing parchment between layers. Let the bars sit at room temperature for about 10 minutes before serving. Freeze undusted bars, wrapped tightly, for up to 2 months. Thaw overnight in the refrigerator and dust with powdered sugar before serving.

Variations and Troubleshooting: The baking powder can be omitted for a slightly denser, more custardy filling. If the top browns too quickly, check that the oven temperature is accurate and keep the pan on the center rack. Loosely tent with foil if needed while the bars finish baking.

Pro Tips

• Use fresh lemon juice only, since bottled juice tastes flat.
• Keep the butter cold so the crust stays tender and crumbly.
• Pour the filling onto the warm crust so the layers bond.
• Pull the pan when the center still wobbles slightly, since it firms up as it cools.
• Wipe your knife clean between cuts for neat edges.
• Dust with powdered sugar just before serving so it stays snowy white.

FAQs

What makes these bars old-fashioned?
They use a simple shortbread crust and a custard filling with a touch of baking powder, just like many vintage recipes. The result is light, tender, and gently tangy.

How should I store them?
Cover and refrigerate for up to 4 days, with parchment between layers. Bring them to room temperature for 10 minutes before serving.

Can I freeze them?
Yes, freeze the undusted bars wrapped tightly for up to 2 months. Thaw overnight in the fridge and dust with fresh powdered sugar.

Can I skip the baking powder?
Yes, the bars will be a little denser and more custardy. Both versions taste wonderful.

Why did my filling brown on top?
The oven may be running hot or the rack too high. Move the pan to the center rack and tent loosely with foil if the top darkens early.

A Timeless Little Goodbye

Some recipes feel like a handshake across the years, and this is one of them. I hope it brings a little of that old kitchen warmth to your table. For more citrus joy, try my melt in your mouth lemon curd cookies, the 5 ingredient glazed lemon curd cookies, or the zesty drop lemon curd cookies.

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