Lemon bars with shortbread crust are one of those treats that make everyone at the table go quiet for a second and then ask for another piece. I’m talking about a buttery, crumbly base topped with the brightest, tangiest lemon custard you’ve ever tasted.
I first made these on a Saturday afternoon when Isabella and Emma were begging for something sweet. I had a bag of lemons sitting on the counter (you know how that goes), and Henry suggested I try making old fashioned lemon bars from scratch. Well, I did. And now they’re on repeat in our house every single spring and summer.
These bars are the real deal. No box mix, no shortcuts just simple pantry staples and fresh lemon juice that come together into something truly special. Plus, they pair perfectly with a cold glass of iced tea on a warm afternoon. If you love bright, citrusy desserts, you should also check out my easy strawberry brownies recipe for another fruity baked treat.
Why You Will Like This Recipe
- So easy to make the shortbread crust comes together in one bowl with a stand mixer, and the filling takes just a few minutes.
- Bright, fresh lemon flavor that’s tangy without being too sour.
- Buttery shortbread base that holds its shape and doesn’t get soggy.
- Great for parties and potlucks you can slice them into neat little squares and they travel well.
- Made from scratch with basic ingredients you probably already have at home.
- Perfect spring and summer dessert that feels light and refreshing after any meal.
Ingredients You Need for Lemon Bars with Shortbread Crust
For the Shortbread Crust:
- 2 cups all-purpose flour
- 1/2 cup confectioner’s sugar
- 1 cup cold unsalted butter, cubed
- 1 teaspoon vanilla extract
- 1/4 teaspoon salt
For the Lemon Custard:
- 4 large eggs
- 2 cups granulated sugar
- 1/2 cup fresh lemon juice (about 3–4 lemons)
- 1/4 cup all-purpose flour
- 1/2 teaspoon baking powder
- Powdered sugar for dusting (optional)
Ingredient notes: Cold butter is key for a crumbly, tender crust. If your butter is too soft, the dough will be sticky and hard to press into the pan. I always cube mine and toss it back in the fridge for 10 minutes before mixing.
For the lemon juice, fresh is best. It gives you that punchy, bright flavor that bottled juice just can’t match. That said, if bottled is all you’ve got, it still works the bars just won’t taste quite as vibrant.
How to Make the Best Lemon Bars with Shortbread Crust
- Preheat your oven to 350°F. Line a 9×13-inch baking dish (glass or ceramic works great) with parchment paper or lightly grease it.
- Make the shortbread crust. In the bowl of a stand mixer fitted with the paddle attachment, mix the flour, confectioner’s sugar, salt, vanilla, and cold cubed butter on low speed. Keep mixing until the dough is crumbly and no dry bits remain bout 5 minutes. Press the mixture firmly into an even layer on the bottom of your baking dish.
- Bake the crust for 20–22 minutes, until the edges just begin to turn golden. Remove from the oven and use a fork to poke shallow holes all over the crust. (This helps the custard grip onto the base so it doesn’t slide off when you cut it.) Reduce oven temperature to 325°F.
- Prepare the lemon filling. Wipe out your mixer bowl and switch to the whisk attachment. Whisk the eggs until well combined, then beat in the sugar and fresh lemon juice. Sift the flour and baking powder into the bowl and whisk until smooth.
- Pour the custard over the hot baked crust and return to the oven. Bake for 22–25 minutes, until the custard is set. It should only jiggle slightly in the center when you gently shake the pan.
- Cool and chill. Let the bars cool to room temperature right in the pan about 2 hours. Then transfer to the fridge for at least 1 hour (overnight is even better, trust me). Once they’re completely chilled, dust with powdered sugar and cut into squares.
Storage and Reheating
Fridge storage: Cover your baked lemon custard bars tightly with plastic wrap or transfer them to an airtight container. They’ll stay fresh in the fridge for 4–5 days. I actually think they taste even better the next day after the flavors have had time to meld together.
Freezing: You can freeze these bars for up to 2 months. Place cut squares on a parchment-lined baking sheet, freeze until solid, then transfer to a freezer bag. Thaw in the fridge overnight before serving.
A quick tip: Wait to dust with powdered sugar until right before you serve them. The sugar tends to absorb into the custard if it sits too long.
Fun Variations for Your Lemon Bar Recipe from Scratch
- Lemon-lime bars: Replace half of the lemon juice with fresh lime juice for a fun citrus twist.
- Coconut lemon bars: Add 1/2 cup of sweetened shredded coconut to the shortbread crust before pressing it into the pan.
- Berry swirl: Drop a few spoonfuls of raspberry or blueberry jam onto the custard before baking and use a toothpick to swirl it through.
- Lavender lemon bars: Add 1 tablespoon of dried culinary lavender to the crust mixture for a floral touch that’s perfect for spring entertaining.
Have you ever tried adding herbs to a citrus dessert? It sounds odd, but a little fresh thyme in the crust is surprisingly good.
Your Lemon Bars with Shortbread Crust Questions Answered
Why did my lemon bars turn out runny?
This usually comes down to two things not enough time in the oven or not enough time in the fridge. The center of the custard should only jiggle slightly when you pull them out. If it looks liquidy, give it another 3–5 minutes. And please, don’t skip the chilling step. The bars NEED that time in the fridge to fully set. I learned this the hard way the first time I made them and got impatient.
Can I use bottled lemon juice instead of fresh?
You can, but the flavor won’t be the same. Fresh lemon juice gives these bars that bright, zesty punch that makes them so addictive. Bottled lemon juice works in a pinch, but the taste will be a little flatter. If you’re going through the effort of baking from scratch, I’d say grab a few fresh lemons it’s worth it.
How do I get clean slices when cutting lemon bars?
The secret is patience. Let them chill completely in the fridge first. Then, use a sharp knife and wipe the blade clean with a damp cloth between each cut. This gives you those neat, bakery-style squares that look as good as they taste. No one wants a messy lemon bar, right?
Recipes You May Like
If you loved these lemon bars with shortbread crust, here are a few more treats from my kitchen that I think you’ll enjoy:
- Easy Strawberry Brownies Recipe fruity, chewy, and perfect for spring baking.
- Heart Shaped Brownies Recipe adorable, fudgy brownies that are great for any special occasion.
- Snickerdoodle Blondie Bites oft, cinnamon-sugar bites that disappear fast at parties.
Time to Bake These Lemon Bars
There you have it my favorite lemon bar recipe from scratch with the most perfect, buttery shortbread crust. These bars are tangy, sweet, and so simple to put together. Whether you’re bringing them to a potluck, serving them at a backyard BBQ, or just making a batch for your family on a Sunday afternoon, they never disappoint.
Henry and the kids go through these so fast that I’ve started making a double batch every time. Trust me, once you try them, you’ll understand why.
I’d love to hear how yours turn out! Drop a comment below, and if you make them, be sure to tag me on Instagram. Don’t forget to save this recipe to your Pinterest board so you can find it whenever the craving hits.
Happy baking!
Lemon Bars With Shortbread Crust
- Total Time: 3 hours 2 minutes
- Yield: 24 bars 1x
Description
Lemon bars with shortbread crust are one of those desserts that make everyone at the table go quiet in the best way. A buttery, crumbly base topped with a bright, tangy custard that just melts on your tongue. The crust is rich and tender, the filling is perfectly tart, and the whole thing comes together without any fuss.
Ingredients
- 2 cups all-purpose flour
- 1/2 cup confectioner’s sugar
- 1 cup cold unsalted butter, cubed
- 1 teaspoon vanilla extract
- 1/4 teaspoon salt
- 4 large eggs
- 2 cups sugar
- 1/2 cup fresh lemon juice (about 3–4 lemons)
- 1/4 cup flour
- 1/2 teaspoon baking powder
- Powdered sugar for dusting (optional)
Instructions
- Preheat your oven to 350 degrees F. Line a 9×13-inch baking dish with parchment paper if you want easy removal, or just grease the pan.
- Make the shortbread crust. In the bowl of a stand mixer fitted with the paddle attachment, combine the flour, confectioner’s sugar, cold butter cubes, vanilla, and salt. Mix on low speed until the dough is crumbly and no dry bits remain about 5 minutes. Press evenly into the bottom of your baking dish.
- Bake the crust for 20-22 minutes, until the edges just begin to turn golden. Pull it out and use a fork to poke shallow holes all over the surface. This helps the custard grip onto the crust. Reduce your oven temperature to 325 degrees F.
- Whisk the lemon filling. In the same mixer bowl, switch to the whisk attachment. Beat the eggs until well combined, then add the sugar and lemon juice. Sift the flour and baking powder right into the bowl and whisk until smooth.
- Pour the custard over the warm crust and bake for 22-25 minutes. The center should only slightly jiggle when you gently shake the dish. That is your sign it is done.
- Let the bars cool to room temperature in the pan, then transfer to the fridge. About 2 hours on the counter plus 1 hour in the fridge works, though overnight in the fridge gives you the cleanest slices.
- Sprinkle with powdered sugar right before cutting. Use a sharp knife and wipe it clean between each cut for those pretty, bakery-style squares.
Notes
Cold butter is key for the crust it keeps everything crumbly and tender instead of greasy. Cut it into small cubes and keep it in the fridge until you are ready to mix. Fresh lemon juice gives you the brightest, most vibrant flavor. You can use bottled in a pinch, but the taste will not be quite as fresh or punchy. Chill the bars completely before slicing for clean, neat squares. These actually taste better after chilling overnight, so feel free to prep them a day ahead.
- Prep Time: 15 minutes
- Cook Time: 47 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
