Lemon blondies cut into squares and arranged on parchment-lined wooden board with glossy lemon glaze and fresh lemon slices nearby

These Lemon Blondies are made with fresh zest and lemon juice, so the citrus comes through in every bite. Chewy like a blondie, bright like a lemon bar, done in just over an hour.

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Table of Contents

Ingredients For Lemon Blondies
Ingredient Notes
How to Make
Storing Your Lemon Blondies
How to Serve Lemon Blondies
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In This Post

These lemon blondies strike the balance that's so easy to miss — enough brightness to make the lemon the star, with the buttery, chewy base that makes a blondie worth making in the first place. Zest goes into the batter for depth; juice goes into the glaze for finish. The result is a bar that tastes genuinely, properly lemony.

The glaze is non-negotiable. It's thick, tangy, and sets into a crackly top that makes every bite better. Don't skip it!

One bowl, simple ingredients, done in just over an hour. These are the lemon blondies you'll make twice in the same week.

Tall stack of lemon blondies with soft, dense crumb and creamy lemon glaze, surrounded by lemon slices on parchment paper

Ingredients For Lemon Blondies

What you'll need to make this recipe for lemon brownies:

For The Lemon Blondie Batter:

1 cup of all-purpose flour, spooned and leveled
½ teaspoon of baking powder
½ teaspoon of table salt
½ cup (8 tablespoons) of salted butter, softened to room temperature
¾ cup of granulated sugar
2 extra-large eggs, room temperature
2 tablespoons of freshly grated lemon zest
¼ cup of fresh lemon juice

For the Lemon Glaze

1¼ cups of powdered sugar, sifted
1 tablespoon of fresh lemon zest
2 tablespoons of fresh lemon juice

Ingredient Notes

🍋 Fresh lemons are critical here. You need both the zest and the juice, and bottled juice just doesn't have the same flavor. The zest goes into the batter, the juice goes into the glaze, and that layering is exactly what gives these lemon blondies their flavor.

Check your lemons. Older lemons have less fragrant zest, so if they've been in your fridge for a while, pick up a few fresh lemons before baking.

Softened butter matters too, and it's important to make sure it's not melted. When you cream it properly with sugar, you'll get that chewy, slightly dense texture that makes a blondie a blondie.

How to Make

Overall, this is a fairly simple, forgiving recipe. But these are the things I wish I had known the first time I made these.

1. Start with properly softened butter. Not melted, not cold from the fridge. It should give when you press it, but still hold its shape. This is what gives you that chewy, dense texture.

2. Cream the butter and sugar until it looks fluffy. This takes a full minute to a minute and a half. Don't rush it. This step builds the structure that holds everything together.

eamed butter and sugar in a glass bowl on a marble surface, showing a light and fluffy texture. — You're looking for the mixture to turn pale and almost white, with a soft, fluffy texture like this. If it still looks yellow and dense, keep going.

3. Once the flour goes in, stop mixing. Stir until it just disappears, and then put the spoon down. Overmixing at this stage is the most common reason blondies turn out tough instead of chewy.

Lemon blondie batter in a glass bowl after eggs and lemon have been incorporated, showing a smooth, pale yellow, ribbony texture.

4. Pull them out before you think they're ready. These will be pale yellow, not golden brown. If you're waiting for color you've gone too far. A toothpick with a few moist crumbs is exactly right. Start checking at 18 minutes.

Freshly baked lemon blondies in a parchment-lined pan on a cooling rack, showing the pale yellow color that tells you they are done.

5. Thicken up the glaze. Your glaze should be pourable, but thick. It should coat the top of your blondies, but not run down the sides. If it's too thin, add more powdered sugar, about ½ tablespoon at a time.

6. Let the glaze fully set before you cut them. I know it's hard to wait. But if you cut too early the glaze slides off the sides and you lose that crackly top that makes these worth making.

Sixteen glazed lemon blondies cut into squares on parchment paper on a wooden cutting board, with fresh lemon slices alongside.

Storing Your Lemon Blondies

In the Fridge: These keep well in the fridge in an airtight container for up to five days. The texture actually improves on day two once everything has settled and the glaze has fully set. They're good cold straight from the fridge, but if you prefer them softer let them sit at room temperature for about fifteen minutes first.

In the Freezer: If you want to freeze them, do it before glazing. The glaze gets wet and loses its texture when it thaws. Wrap individual bars tightly in plastic wrap, freeze for up to two months, and glaze them after they've come back to room temperature.

Close-up of lemon blondies stacked on a white plate, topped with smooth lemon glaze and flecks of lemon zest, with lemons in the background

How to Serve Lemon Blondies

My lemon blondies are good at room temperature and even better cold straight from the fridge. The glaze firms up and the texture gets a little more dense and chewy. Either way works, it really just depends on how patient you are!

They travel well, too. They hold their shape, don't melt, and pack easily, which makes them a great choice for potlucks and bake sales.

If you want to build out a dessert table around them, these pair naturally with other lemon desserts like our lemon brownies or lemon crinkle cookies.

My recipe for strawberry blondies is made in a similar way, and is a great complementary treat on a dessert tray.

More Recipes ⭐ Lemon Shortbread Cookies | No-Bake Lemon Pie | Lemon Coffee Cake | Lemon Cupcakes

Lemon Blondies

These Lemon Blondies are made with fresh zest and lemon juice, so the citrus comes through in every bite. Chewy like a blondie, bright like a lemon bar, done in just over an hour.

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Prep Time 15

Cook Time 20

resting time 30

Total Time 1 5

Course Dessert

Cuisine American

Servings

Calories 162 kcal

Ingredients

Lemon Blondie Batter

1 cup all-purpose flour (spooned and leveled)
½ teaspoon baking powder
½ teaspoon table salt
½ cup salted butter (softened to room temperature (8 tablespoons))
¾ cup granulated sugar
2 extra-large eggs (room temperature)
2 tablespoons freshly grated lemon zest
¼ cup fresh lemon juice

Lemon Glaze

1¼ cups powdered sugar (sifted)
1 tablespoon fresh lemon zest
2 tablespoons fresh lemon juice

DIRECTIONS

Preheat the oven to 350°F. Line an 8×8 baking dish with parchment paper or heavy-duty aluminum foil, leaving a bit of overhang on the sides so you can easily lift the blondies out later. Lightly spray the lining with nonstick cooking spray, then set aside.
In a small mixing bowl (2 to 3 cups), whisk together the flour, baking powder, and salt until combined.
Using a stand mixer or a medium mixing bowl (2 to 3 quarts) with a handheld mixer, beat the softened butter on medium-high speed for about 30 seconds to 1 minute, until smooth.
Add the granulated sugar and continue mixing for 1 to 1½ minutes, or until the mixture is light and fluffy.
Reduce the mixer speed to medium-low. Add the room-temperature eggs one at a time, mixing well after each addition.
With the mixer still on medium-low, add the flour mixture and mix just until everything is incorporated.
Stir in the lemon zest and drizzle in the lemon juice, mixing only until combined.
Spoon the batter evenly into the prepared baking dish and gently tap the pan on the counter to release any trapped air bubbles. Bake for 18 to 20 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs. Keep an eye on them starting around the 15-minute mark, as ovens can vary. The blondies should remain pale yellow rather than golden brown. Remove from the oven and let cool in the pan for about 30 minutes, or until fully cooled. Once cooled, prepare the lemon glaze.
In a small mixing bowl (2 to 3 cups), whisk together the powdered sugar, lemon zest, and fresh lemon juice until smooth.
Use a silicone spatula or offset spatula to spread the glaze evenly over the blondies. Let the glaze set before lifting the blondies out of the pan using the parchment or foil overhang. If your kitchen is warm, you can place the pan in the refrigerator briefly before slicing.
Cut into 16 squares using a sharp knife before serving.

Notes

Butter must be softened to room temperature, not melted. This gives you the chewy texture.
Stop mixing as soon as the flour disappears. Overmixing makes them tough.
They will be pale yellow when done, not golden brown. Start checking at 18 minutes.
Let the glaze set completely before cutting or it will slide off the sides.
If your glaze is too runny, add powdered sugar a tablespoon at a time.
Older lemons have less fragrant zest. Use fresh lemons for the best flavor.

Nutrition

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Lemon Blondies