There are desserts that satisfy a chocolate craving, and then there are desserts that make you feel like you’re sitting in a sunbeam. Lemon bars fall firmly into the second category—bright, tangy, and impossibly cheerful, they’re the perfect pick-me-up any time of year.
These classic lemon bars start with a buttery shortbread crust that’s sturdy enough to hold the filling but tender enough to melt in your mouth. On top sits a silky, creamy lemon layer that strikes the perfect balance between sweet and tangy.
A final dusting of powdered sugar just before serving makes them as beautiful as they are delicious. Whether you’re making them for a spring brunch, a summer picnic, or just because you need a little sunshine, these lemon bars never disappoint.
Step-by-Step Instructions
Preheat and Prepare
Preheat your oven to 350°F (175°C). Line a 9×13 inch baking pan (or 8×8 inch for thicker bars) with parchment paper, leaving overhang on all sides for easy removal. Lightly grease the parchment.
Make the Shortbread Crust
In a medium bowl, whisk together the flour, sugar, and salt.
Add the cold butter cubes and vanilla extract (if using). Cut the butter into the flour using a pastry blender, two forks, or your fingertips until the mixture resembles coarse meal with some pea-sized butter pieces remaining.
Press the mixture firmly and evenly into the bottom of the prepared pan. Use the bottom of a measuring cup or glass to press it down firmly—this ensures the crust holds together after baking.
Bake for 18-20 minutes, until the edges are lightly golden. Remove from oven and set aside. Leave the oven on.
Make the Lemon Filling
While the crust bakes, prepare the filling. In a large bowl, whisk the eggs until lightly beaten.
Add the sugar, flour, and salt, and whisk until smooth and well combined.
Add the lemon juice, lemon zest, and milk (or cream). Whisk until everything is fully incorporated. The mixture will be thin—that’s normal.
Assemble and Bake
Pour the lemon filling over the warm crust (it’s important that the crust is still warm).
Carefully return the pan to the oven and bake for 20-25 minutes (for 9×13 pan) or 25-30 minutes (for 8×8 pan), until the filling is set around the edges but still slightly jiggly in the very center. It should no longer be liquid.
Remove from the oven and let cool completely at room temperature.
Once cool, refrigerate for at least 2 hours, preferably 3-4 hours, until thoroughly chilled and firm. This makes for clean slicing.
Slice and Serve
Use the parchment overhang to lift the entire block of lemon bars onto a cutting board.
Dust generously with powdered sugar just before serving (if you dust too early, the sugar will absorb into the bars).
Slice into squares with a sharp knife, wiping the blade clean between cuts for neat edges.
Serve chilled or at room temperature. Store leftovers in the refrigerator.
Summary
Prep Time: 20 minutes | Bake Time: 40-45 minutes (total) | Chill Time: 2-3 hours | Total Time: About 3.5 hours (mostly hands-off)
Yield: 16 bars (9×13 pan) or 12 bars (8×8 pan)
Difficulty: Easy
Storage and Make-Ahead Tips
How to Store:
Store lemon bars in an airtight container in the refrigerator for up to 5 days. Place parchment paper between layers to prevent sticking. They’re delicious cold or at room temperature.
Can You Freeze Lemon Bars?
Yes! Lemon bars freeze beautifully. Freeze them without the powdered sugar dusting. Place the bars in a single layer on a baking sheet and freeze until solid, then transfer to a freezer-safe container with parchment between layers. Freeze for up to 3 months. Thaw in the refrigerator overnight and dust with powdered sugar before serving.
Make-Ahead for Parties:
Lemon bars are perfect for making ahead. Prepare them 1-2 days in advance, keep refrigerated, and dust with powdered sugar just before serving. The flavors actually meld and deepen over time.
Freezing the Crust:
You can press the unbaked crust into the pan, wrap tightly, and freeze for up to 3 months. Bake directly from frozen, adding a few minutes to the baking time.
