A Porch Swing Kind of Sweet

Growing up, no church supper or Sunday visit felt complete without a pan of lemon bars cooling on a checkered tablecloth, and I can still hear the screen door creak as the neighbors came by for a square.

Those slow, generous afternoons shaped how I cook, and you can find more of that story about DanyRecipes if you’d like to pull up a chair. This lemon bars recipe is the Southern way, with a rich buttery crust, a tangy custard filling, and a snowy drift of powdered sugar on top.

Why Southern Lemon Bars Feel Like Home

Southern lemon bars lean a little richer and softer than most. A touch of buttermilk in the filling rounds out the tartness, so every bite feels creamy, bright, and old fashioned in the best way.

This is a classic lemon bars from scratch bake in a 9×13 pan, which makes it ideal for family reunions, covered dish suppers, and holiday trays. Among all my lemon desserts, it is the one that gets requested again and again, right alongside my chewy thumbprint lemon curd cookies.

What to Pull From Your Pantry

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) unsalted butter, cold and cubed
• 1 teaspoon vanilla extract

For the lemon filling:

• 1 3/4 cups granulated sugar
• 4 large eggs, at room temperature
• 1/2 cup fresh lemon juice, strained
• 1/4 cup buttermilk, shaken well
• 2 tablespoons lemon zest, finely grated
• 3 tablespoons all purpose flour
• 2 tablespoons melted butter, cooled slightly
• Pinch of salt

Bake It Like Grandma Did

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

Stir the flour, powdered sugar, and salt together, then cut in the cold butter and vanilla until the dough looks like fine, crumbly sand.

STEP 3

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

STEP 4

Whisk the sugar, eggs, lemon juice, buttermilk, zest, flour, melted butter, and salt until silky and well blended.

STEP 5

Pour the filling over the warm crust and bake for 24 to 28 minutes until the center is set with just a gentle jiggle.

STEP 6

Cool the pan on a rack for 30 minutes, then chill for at least 2 hours before dusting with powdered sugar and slicing into squares.

Serving Ideas and Sweet Twists

• Serve with a tall glass of sweet tea for the full Southern experience.
• Add a spoonful of fresh strawberries or peaches on top in summer.
• Stir a tablespoon of finely chopped candied ginger into the crust for a warm kick.
• Offer a few of my crispy shortbread lemon curd cookies on the same platter for a buttery crunch.
• Cut into bite size squares and tuck them into a tin for a neighborly gift.

Traditional Southern Lemon Bars

These traditional Southern lemon bars feature a rich buttery shortbread crust and a tangy, creamy lemon filling made with buttermilk. Finished with a snowy dusting of powdered sugar, they are perfect for family gatherings, church suppers, and holiday dessert trays.

Print Recipe Pin Recipe

Prep Time 20 minutes mins

Cook Time 48 minutes mins

Cooling and Chilling Time 2 hours hrs 30 minutes mins

Total Time 3 hours hrs 38 minutes mins

Servings: 24 bars

Course: Dessert

Cuisine: Southern American

Calories: 230

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
• 1 tsp vanilla extract

Lemon Filling

• 1 3/4 cups granulated sugar
• 4 large eggs at room temperature
• 1/2 cup fresh lemon juice strained
• 1/4 cup buttermilk shaken well
• 2 tbsp lemon zest finely grated
• 3 tbsp all-purpose flour
• 2 tbsp butter melted and cooled slightly
• 1 pinch salt

Equipment

• 9×13-inch Baking Pan
• Parchment paper
• Mixing bowls
• Whisk
• Pastry Cutter or Fork
• Wire Cooling Rack

Method

 

1. Preheat the oven to 350°F (175°C). Grease a 9×13-inch baking pan and line it with parchment paper, leaving some overhang so the bars can be lifted out easily.
2. Stir together the flour, powdered sugar, and salt. Cut in the cold cubed butter and add the vanilla, mixing until the dough resembles fine, crumbly sand.
3. Press the crust mixture evenly into the prepared pan. Bake for 18 to 20 minutes, until the edges are lightly golden.
4. In a bowl, gently whisk together the granulated sugar, eggs, lemon juice, buttermilk, lemon zest, flour, melted butter, and salt until smooth and well blended. Avoid over-whisking to prevent excess foam.
5. Pour the lemon filling over the warm crust. Bake for 24 to 28 minutes, until the center is set but still has a gentle jiggle.
6. Cool the pan on a wire rack for 30 minutes, then refrigerate for at least 2 hours. Dust with powdered sugar just before serving, then lift the slab from the pan and slice into squares.

Notes

Refrigerate covered lemon bars for up to 4 days. For neat slices, chill thoroughly and use a warm, clean knife, wiping it between cuts. Freeze the bars without powdered sugar for up to 2 months, then thaw overnight in the refrigerator. For a buttermilk substitute, mix 1/4 cup milk with 3/4 teaspoon lemon juice and let stand for 5 minutes. Dust with powdered sugar just before serving. Optional serving ideas include fresh strawberries or peaches, or adding 1 tablespoon finely chopped candied ginger to the crust.

Pro Tips

• Shake the buttermilk well before measuring so the filling stays smooth and even.
• Let the eggs sit at room temperature for 30 minutes to blend easily without overmixing.
• Zest the lemons before juicing them, since it is much easier that way.
• Bake until the center is just set, because the bars firm up as they chill.
• Run a thin knife around the edges before lifting out the slab to prevent tearing.
• Wait to dust with powdered sugar until serving so it stays bright white.

FAQs

How should I store Southern lemon bars?
Cover and refrigerate them for up to 4 days. Place parchment between layers if you stack the squares.

Can I substitute the buttermilk?
Yes, stir 1/4 cup of milk with 3/4 teaspoon of lemon juice and let it sit for 5 minutes. It gives a similar tang and tenderness.

Why are my bars too soft to slice?
They likely need more chilling time or a few more minutes in the oven. A fully chilled pan slices cleanly with a warm, wiped knife.

Can I freeze these bars?
Absolutely, freeze them wrapped tightly and undusted for up to 2 months. Thaw in the fridge overnight before serving.

Why does my filling have a layer of foam?
Over whisking adds air that rises to the top while baking. Stir gently, and skim any foam from the surface before pouring.

A Warm Southern Goodbye

There is nothing quite like a pan of lemon bars to bring people to the table and keep them lingering. I hope this recipe brings a little porch swing comfort to your kitchen. For even 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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