Lemon Bars with Shortbread Crust
If you’re looking for a dessert that feels impressive but is secretly one of the easiest things you’ll ever bake, these lemon bars with shortbread crust are exactly what you need. With a buttery, crumbly base and a bright, silky lemon filling, they strike the perfect balance between rich and refreshing. Whether you’re making them for a summer cookout, a holiday dessert tray, or just because you have lemons on the counter, this recipe delivers every single time.
The best part? You don’t need any special baking skills to pull these off. If you can press dough into a pan and whisk a few ingredients together, you can absolutely make these lemon bars from scratch.
If you’re a fan of bright lemon flavor, you’ll also love these lemon poppyseed muffins for a quick morning treat.
Why You’ll Love This Lemon Bar Recipe
- Beginner-friendly — no fancy equipment, no complicated techniques
- Simple ingredients — everything you need is probably already in your kitchen
- That buttery shortbread crust — it’s thick, sturdy, and holds up beautifully under the lemon filling
- Perfectly balanced flavor — tangy from fresh lemon juice, sweet but not over-the-top
- Great for making ahead — they actually taste better after chilling in the fridge overnight
- Crowd-pleaser — these disappear fast at every gathering
What Are Lemon Bars with Shortbread Crust?
Lemon bars are a classic American dessert consisting of two layers: a firm, buttery shortbread base and a smooth, custardy lemon filling that sets up when baked. They’re typically finished with a dusting of powdered sugar and cut into squares for serving.
The shortbread crust is what separates a truly great lemon bar from a mediocre one. A good crust is sturdy enough to hold the filling without becoming soggy, but still tender and buttery when you bite into it. This recipe nails that balance.
Ingredients for Lemon Bars with Shortbread Crust
Shortbread Crust Ingredients
- 1 cup (2 sticks) butter, room temperature
- ½ cup white sugar
- 1 cup all-purpose flour
Lemon Filling Ingredients
- 6 eggs
- 2 cups white sugar
- ¾ cup fresh squeezed lemon juice (about 4–5 lemons)
- ½ cup all-purpose flour
For Serving
- Powdered sugar, for dusting
How to Make Lemon Bars with Shortbread Crust
- Preheat your oven to 350°F (175°C). Line a 9×13-inch glass baking dish with parchment paper, leaving a few inches of overhang on the sides. That overhang is your best friend — it makes lifting the finished bars out of the pan completely effortless. Set the pan aside.
- In a mixing bowl, combine the room-temperature butter, sugar, and flour. Use a hand mixer to beat everything together until the mixture looks crumbly and sandy. Don’t panic if the dough seems dry — that’s exactly what you want. A drier dough means a sturdier crust that won’t turn soggy under the filling.
- Press the dough firmly and evenly into the bottom of your prepared pan. Use the flat bottom of a measuring cup or your hands to get it nice and even all the way to the edges.
- Bake the crust for 20–22 minutes, or until the edges are just turning lightly golden brown. Remove it from the oven and, while it’s still warm, use a fork to poke small holes across the surface. Don’t poke all the way through — dimple the top. This helps the lemon filling grip the crust rather than sliding off.
- While the crust bakes, make your filling. In a large bowl, whisk together the sugar and flour until combined. In a separate bowl, whisk the eggs and fresh lemon juice together until smooth. Slowly pour the egg-lemon mixture into the sugar-flour mixture, stirring as you go, until everything is fully combined and smooth.
- Pour the lemon filling over the warm (not cooled) shortbread crust. Bake at 350°F for 25–30 minutes, or until the center is set and no longer jiggles when you gently shake the pan. The filling will look slightly puffed and pale golden on top — that’s perfect.
- Remove the bars from the oven and let them cool completely at room temperature for about 2 hours. Then transfer them to the refrigerator for at least another 2 hours to fully chill and set. These bars are best served cold, so resist the urge to cut into them early!
- When you’re ready to serve, use the parchment paper overhang to lift the bars out of the pan and onto a cutting board. Dust the top generously with powdered sugar, then slice into squares. Enjoy immediately, or keep them chilled until serving time.
Pro tip: Using fresh-squeezed lemon juice here is non-negotiable. Bottled lemon juice doesn’t give you that bright, vibrant flavor.
Tips for Perfect Lemon Bars with Shortbread Crust
The key to perfect lemon bars with shortbread crust is all in the details — here’s what to know.
- Use room temperature butter. Cold butter won’t mix into the crust properly and can leave lumps.
- Don’t skip poking the crust. Those little fork holes help the filling adhere and prevent it from sliding off when you cut the bars.
- Pour the filling over a warm crust. A warm crust helps the filling bond to it as it bakes.
- Fresh lemon juice only. Use fresh squeezed lemon juice only. Bottled juice has additives and a duller flavor that will show up in the finished bars.
- Chill completely before cutting. If you cut them warm, the filling won’t hold its shape, and you’ll end up with a mess — albeit a delicious one.
- Use a sharp knife and wipe between cuts for clean, bakery-style squares.
How to Store Lemon Bars with Shortbread Crust
- Refrigerator: Store your lemon bars with shortbread crust in an airtight container in the fridge for up to 5 days. Keep parchment between layers to prevent sticking. Wait to add the powdered sugar until just before serving, as it absorbs into the filling in the fridge.
- Freezer: Lemon bars freeze beautifully. Place them in a single layer on a baking sheet to freeze solid, then transfer to a freezer-safe container or zip bag for up to 3 months. Thaw overnight in the refrigerator.
- Do not store at room temperature for more than a few hours — the egg-based filling needs to stay cold.
FAQS
Why is my lemon bar filling still jiggly after 30 minutes?
Every oven is a little different. If the center is still noticeably jiggly, give it another 3–5 minutes. The filling should be set but still have the tiniest tremor in the very center — it will continue to firm up as it cools.
Can I use bottled lemon juice?
You can, but we strongly recommend fresh. Fresh lemon juice gives you a brighter, cleaner flavor that makes a noticeable difference in the final bars. It’s worth the few extra minutes of squeezing.
Why is my lemon bar crust crumbly and falling apart?
A slightly crumbly crust is completely normal — that’s the shortbread texture! Make sure you’re pressing it firmly into the pan before baking. If it’s excessively crumbly after baking, your butter may have been too cold when mixing.
Can I make these in advance?
Absolutely — in fact, we recommend it! Lemon bars taste even better the next day after they’ve had time to fully chill and the flavors meld together. Make them the day before and store covered in the fridge.
My filling has a white foamy layer on top after baking — is that normal?
Yes! That slight foam on the surface is completely normal and is just the result of the eggs setting during baking. A dusting of powdered sugar will cover it completely.
Can I double this recipe?
This recipe already uses a 9×13 pan, which is a generous batch. To make more, bake two separate pans rather than trying to double and fit into one pan.
Love the bar format? These No Bake Blueberry Lemon Cheesecake Bars are another crowd-pleaser that pairs beautifully with lemon season.
Lemon Bars with Shortbread Crust
Ingredients
Shortbread Crust
- 1 cup butter room temperature
- ½ cup white sugar
- 1 cup all-purpose flour
Lemon Filling
- 6 eggs
- 2 cups white sugar
- ¾ cup fresh squeezed lemon juice
- ½ cup all-purpose flour
For Serving
- Powdered sugar for dusting
Instructions
- Preheat oven to 350°F (175°C). Line a 9×13-inch glass baking dish with parchment paper, leaving overhang on the sides. Set aside.
- In a mixing bowl, combine butter, sugar, and flour. Beat with a hand mixer until crumbly. Press firmly and evenly into the prepared pan.
- Bake the crust for 20–22 minutes, until the edges are lightly golden. Remove from the oven and poke small holes across the surface with a fork (don’t poke all the way through).
- In a large bowl, whisk together sugar and flour. In a separate bowl, whisk eggs and lemon juice. Gradually stir the egg mixture into the sugar-flour mixture until smooth.
- Pour the lemon filling over the warm crust.
- Bake at 350°F for 25–30 minutes, until the center is set and doesn’t jiggle.
- Cool completely at room temperature (about 2 hours), then refrigerate for at least 2 more hours.
- Lift bars from the pan using the parchment overhang. Dust with powdered sugar, cut into squares, and serve cold.
Notes
- Fresh lemon juice is strongly recommended over bottled for best flavor.
- Bars taste even better the next day after fully chilling.
- Store in an airtight container in the refrigerator for up to 5 days, or freeze for up to 3 months.
- Add powdered sugar just before serving — it absorbs into the filling in the fridge.
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About Sarah
Wife. Mother. From-Scratch Cook. Homemaker.
I’m Sarah, the creator of Rocky Hedge Farm, where I share my love for simple living, homemade meals, and creating a cozy home. As a wife and mother, I’m passionate about slowing down, cooking from scratch, and finding joy in the everyday moments of life. From DIY projects and family-friendly recipes, I hope to inspire others to embrace a life rooted in simplicity and warmth.
