Easy Lemon Bars with a Buttery Shortbread Crust

As much as I love making my favorite cookie recipes, sometimes I don’t want to fuss with multiple batches. That’s where one-pan treats like these easy lemon bars come in! Rather than scooping, rolling, baking and filling individual lemon curd thumbprint cookies, I can bake off enough treats to serve a crowd using just one tray.  

Ingredients & Substitutions

• All-Purpose Flour – We’ll use plain white flour in both the shortbread and lemon curd layers. Make sure to use a kitchen scale or the spoon-and-sweep method for measuring so you don’t add too much.
• Powdered Sugar – This starchy sweetener helps develop a perfectly crumbly, melt-in-your-mouth shortbread base. If you don’t have any on hand, use a food processor to blitz 1 cup of white sugar with 1 tablespoon of cornstarch.
• Butter & Salt – Starting with unsalted butter and adding your own salt is the best way to ensure consistent results between batches.
• Vanilla Extract – A hint of warming vanilla makes the cookie base even more inviting.
• Milk – This is an “only if you need it” ingredient, for adding to the cookie dough if it feels too dry. Feel free to use any percentage of dairy milk or your preferred plant-based milk.
• Fresh Lemon – We want to use both the zest and juice to get the zingiest lemon flavor.
• Granulated Sugar – White sugar has a neutral sweetness, which allows the lemon to shine.
• Large Eggs – Size matters! If you’re using liquid eggs or a different size of egg, note that each large egg is a scant ¼ cup.

This is just a short review of the ingredients; for the complete recipe, including quantities, scroll down to the recipe card 👇

Ingredient Spotlight: Lemons

Lemons are the heart of any great lemon bar, so choosing the right kind makes all the difference. Regular (Eureka or Lisbon) lemons have that classic bright, tangy acidity that gives lemon bars their signature sharp, zippy flavor. 

Meyer lemons are naturally sweeter and more floral, with thinner skins and a gentler tartness. If you prefer softer, more aromatic lemon bars, Meyer lemons are a lovely choice, but they’ll give you a less puckery result than traditional lemons.

If possible, use fresh lemon juice and freshly grated zest. Bottled lemon juice is convenient, but it often tastes flat, bitter, or slightly metallic. The aroma, the brightness, and even the color of your lemon bars will be noticeably better when you use fresh fruit. And don’t forget the zest! It’s packed with oils that add a concentrated citrus flavor you can’t get from juice alone.

If you want to play with other citrus, you can, just keep the acidity in mind. Limes keep things tart and lively, grapefruit adds a subtle bitterness, and blood oranges contribute gorgeous color and a mellow, sweet-citrus flavor. Swap citrus one-for-one, but be prepared to adjust the sugar and/or add some lemon or lime to the mix depending on how sweet or tart your fruit is.

How to Make Lemon Bars with Shortbread Crust

Watch the full video recipe to learn how to make the BEST Lemon Bars recipe.

Prefer the written recipe? Scroll down to the recipe box 👇

Optional Variations & Dietary Adaptations

• Gluten-Free – Swap in your favorite cup-for-cup all-purpose baking blend (preferably one that includes xanthan gum).
• Dairy-Free – Use high-quality vegan butter for all the flavor without any of the dairy!
• Citrus Swap – Hop back up to the Ingredient Spotlight section for ideas of different citrus fruits to try. From there, you can also play with the shortbread base (e.g. add coconut extract if making lime bars) to make them your own.

Expert Tips & Tricks 

• Add milk only if needed. The crust dough should feel soft, sandy, and cohesive. If it seems powdery or won’t hold together when pressed, add just 1-2 teaspoons of milk. Too much will make the crust dense or cause it to puff unevenly.
• Chill the crust. Don’t skip this step. A cold crust holds its shape better, preventing shrinkage and helping the bars bake evenly. A warm crust can pull away from the pan, leaving gaps and uneven edges.
• Choose the right pan. Glass or ceramic dishes work best because they won’t react with the acidic lemon filling. Metal pans can sometimes give lemon bars a faint metallic taste. If you do use metal, line it completely with parchment paper to create a buffer.
• Prevent crust shrinkage. After par-baking, don’t pull the crust fully out of the oven. Sudden temperature changes can cause it to contract. Instead, open the oven door and pour the filling directly onto the hot crust while it’s still inside.
• Strain for silky filling. For an ultra-smooth lemon layer with no zest flecks, strain the filling through a fine-mesh sieve before pouring it over the crust.
• Make a richer curd. For a more decadent, custardy filling, swap the 6 whole eggs for 4 whole eggs + 3 yolks. The extra yolks add body and creaminess.
• Adjust sweetness to taste. If you prefer a sharper, extra tangy lemon bar, reduce the sugar in the filling to 1 cup (200 g).

Troubleshooting a pale or soft crust:

• Why it happens: The oven wasn’t fully preheated, your oven runs cool (get an oven thermometer!), you used a glass dish (which heats more slowly), the crust was pressed unevenly, the butter pieces were too large, too much milk was added, or the crust layer was too thick.
• How to avoid it: Bake until the edges turn golden, not just set; add 3-5 extra minutes when using a glass dish; press the dough into an even, level layer; pulse the butter thoroughly into the flour for even baking; and when in doubt, bake 2-4 minutes longer. A well-baked crust stays crisp under the filling.

How to Serve Lemon Bars

For a classic look, dust lemon bars generously with powdered sugar just before serving to balance the tartness. When serving for parties, cut into small squares or triangles for easy, mess-free bites.

For a more colorful spread, plate the bars with a few fresh berries; raspberries, blueberries, or strawberries all pair beautifully with lemon’s bright acidity.

And if you’re looking for a drink pairing, try serving a lemon bar with a cup of Earl Grey, chamomile, strawberry iced tea, homemade lemonade, or strawberry lemonade. Anything that highlights the floral, sunny flavor of the citrus is a good move! 

Storage Instructions

• Refrigeration: Store lemon bars in an airtight container in the refrigerator for up to 5 days. 
• Freezing: If you want to freeze them, place the sliced bars (without powdered sugar) in a single layer or with parchment between layers and freeze for up to 3 months. 
• Serving: When you’re ready to serve, thaw them in the fridge, then dust with powdered sugar just before enjoying.

More Lemon Desserts

• Homemade Lemon Curd
• Lemon Tart
• Lemon Posset
• Moist Lemon Loaf Cake

More Bar Cookie Recipes 

• Healthy Homemade Granola Bars
• Pecan Pie Bars
• Healthy Chocolate Peanut Butter Bars
• Chocolate cheesecake Bars
• Lemon Cheesecake Bars

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