Classic Lemon Bars

These classic lemon bars are one of my all-time favorite desserts. They have a buttery shortbread crust on the bottom and a tangy, sweet lemon filling on top.

The recipe is really straightforward. You don’t need any fancy equipment or hard-to-find ingredients to make them.

What I love most about these is the balance between the rich, crumbly crust and that bright lemon flavor. Every bite just works.

They’re perfect for sharing at gatherings, bringing to a potluck, or just keeping in the fridge for whenever you want something sweet.

Once you try making lemon bars from scratch, you won’t want to go back to store-bought ones. Let me walk you through it.

Why You’ll Love It

The Perfect Sweet-Tart Balance – Fresh lemon juice and zest give these bars a bright tangy flavor that is perfectly balanced by the sweet buttery crust.

Buttery Shortbread Crust – The thick and tender crust is made with real butter and powdered sugar so it practically melts in your mouth.

Silky Smooth Filling – The lemon filling sets into a creamy custard-like layer that is impossibly smooth and satisfying with every single bite.

Recipe Ingredients

For the Crust

• 1 cup Unsalted Butter (softened)
• 1/2 cup Powdered Sugar
• 2 cups All-Purpose Flour
• 1/4 tsp Salt

For the Filling

• 4 Large Eggs
• 1 1/2 cups Granulated Sugar
• 1/3 cup All-Purpose Flour
• 2/3 cup Fresh Lemon Juice (about 4 large lemons)
• 1 tbsp Lemon Zest

For Topping

• 2 tbsp Powdered Sugar (for dusting)

Directions

Step 1

Preheat your oven to 350°F (175°C). Line a 9×13 inch baking pan with parchment paper, leaving an overhang on the sides.

Step 2

In a large bowl, beat the softened butter and powdered sugar together until creamy and smooth. Add the flour and salt, then mix on low speed until a soft dough forms and no dry streaks remain. Press the dough evenly into the bottom of the prepared pan.

Step 3

Bake the crust for 18 to 20 minutes, until the edges are just starting to turn lightly golden. Remove from the oven but keep the oven on.

Step 4

While the crust bakes, whisk together the eggs, granulated sugar, and flour in a large bowl until smooth. Add the fresh lemon juice and lemon zest, then whisk until everything is fully combined.

Step 5

Pour the lemon filling over the hot crust immediately after it comes out of the oven. Return the pan to the oven right away.

Step 6

Bake for 20 to 25 minutes, until the filling is set around the edges and no longer jiggly in the center. It may puff slightly, which is normal.

Step 7

Let the bars cool completely in the pan at room temperature, then refrigerate for at least 2 hours until fully chilled and firm. Dust generously with powdered sugar, then lift out using the parchment and cut into bars.

My Tips

Press the Crust Thin and Even

Use the bottom of a flat measuring cup or a glass to press the dough into the pan. Your fingers alone won’t get it even enough, and thick spots will stay soft and doughy while thin spots overbake.

You want the crust to be the same thickness everywhere, especially in the corners where dough tends to pile up. Push it all the way to the edges so the filling doesn’t seep underneath.

A well-pressed, even crust is honestly the difference between lemon bars that hold together and ones that fall apart when you pick them up.

Pour the Filling Over a Hot Crust

This step matters more than you’d think. The filling needs to go onto the crust right when it comes out of the oven, while the crust is still hot. This helps the two layers bond together so they don’t separate.

Have your filling whisked and ready to go before the crust is done baking. If you wait and let the crust cool down, the filling won’t stick to it properly and you’ll get a gap between the layers when you slice them.

Don’t Overwhisk the Filling

When you whisk the eggs, sugar, flour, and lemon juice together, stop as soon as everything is combined and smooth. You’re not trying to whip air into it.

If you whisk too aggressively, you’ll beat a lot of air into the filling. That air causes the top to puff up way too much in the oven, then crack and collapse as it cools. You want a smooth, flat top on your lemon bars.

More Recipes

• Italian Lemon Cookies
• Lemon Ricotta Cake
• Strawberry Crumble Bars
• Black Sesame Cheesecake Bars
• Dulce de Leche Cookie Bars

Frequently Asked Questions

Can I use bottled lemon juice instead of fresh?

Fresh lemon juice is really recommended here because it gives you that bright, vibrant lemon flavor that makes these bars special. Bottled lemon juice tends to taste more muted and slightly bitter, so your filling won’t have that fresh, zingy taste.

If you absolutely have to use bottled, use the same amount, but know the flavor won’t be quite as good. Fresh lemons also give you the zest, which adds a ton of flavor to the filling.