The Ultimate Fudgy Lemon Brownies with Zesty White Chocolate Glaze
As a former pastry chef, I’ve always cherished customer favorites like classic lemon bars. Their bright, tangy flavor is simply irresistible. However, I often found myself dreaming of a lemon dessert that boasted the rich, dense, and utterly fudgy texture of a traditional brownie. This dream led to the creation of this extraordinary recipe: Fudgy Lemon Brownies with Lemon Icing. It’s a delightful fusion, offering the best of both worlds – the vibrant zest of lemon bars combined with the luxurious chewiness of your favorite brownie.
Crafted in just one bowl, this recipe simplifies the baking process without compromising on flavor or texture. We incorporate premium white chocolate, an abundance of fresh lemon juice, and plenty of aromatic lemon zest to create a brownie that is dense, wonderfully fudgy, and bursting with citrusy goodness. To top it all off, these brownies are finished with a sweet, perfectly balanced lemon glaze that isn’t too runny. The best part? You don’t even need a stand mixer or hand mixer to make them; a simple whisk and a bowl are all you require!

These lemon brownies are decidedly fudgy, not cakey. If you’re seeking that moist, dense, and chewy texture, you’ve come to the right place! However, if a lighter, fluffier lemon cake is what your heart truly desires, then my soft and fluffy lemon loaf cake will be your perfect match instead!
Why You’ll Absolutely Love These Fudgy Lemon Brownies
These lemon brownies aren’t just a dessert; they’re an experience. Here’s why they’ll quickly become a staple in your baking repertoire:
- Unrivaled Fudgy Texture: Forget dry, crumbly brownies. These deliver that signature dense, chewy, and melt-in-your-mouth fudgy texture that defines a truly great brownie. The combination of white chocolate, an extra egg yolk, and careful mixing ensures this delightful consistency.
- Bright & Zesty Lemon Flavor: Unlike traditional lemon bars that rely heavily on a curd filling, these brownies infuse lemon right into the batter. Fresh lemon zest and juice provide an intense, aromatic, and tangy punch that perfectly balances the sweetness.
- The Richness of Brown Butter: This seemingly small extra step makes a colossal difference. Browning the butter adds a nutty, toasted depth that elevates the flavor profile, making these brownies incredibly complex and satisfying. It beautifully complements the bright lemon without overpowering it.
- One-Bowl Convenience: Yes, really! The entire brownie batter comes together in a single bowl, minimizing cleanup and making this a perfect recipe for even novice bakers or busy weeknights.
- No Mixer Required: Leave your electric mixers in the cabinet! A simple whisk and spatula are all you need, making this recipe accessible to everyone.
- Perfect for Any Occasion: Whether it’s a sunny summer picnic, a cozy winter gathering, or just an everyday treat, these lemon brownies are always a crowd-pleaser. Their vibrant color and flavor add a touch of cheer to any table.
- That Irresistible Crinkle Top: Thanks to a specific whisking technique, these brownies develop those coveted, delicate crinkle tops, just like traditional fudgy brownies, adding to their visual appeal.
The Secret to Perfection: Key Ingredients & Their Role
Each ingredient in this recipe plays a crucial role in achieving the perfect fudgy texture and vibrant lemon flavor. Understanding their purpose can help you bake with confidence and ensure fantastic results every time.
- Unsalted Butter (Browned): The cornerstone of richness. Browning the butter transforms it, adding a deep, nutty, and almost caramel-like flavor that enhances the overall complexity of the brownie. It also contributes to the fudgy texture by distributing fat evenly.
- White Chocolate Chips: These aren’t just for sweetness! White chocolate melts seamlessly into the brown butter, creating a decadent, rich base that is fundamental for the brownies’ fudgy consistency. Its creamy notes also beautifully complement the tart lemon.
- Light Brown Sugar & Granulated Sugar: A blend of sugars provides the best of both worlds. Brown sugar adds moisture, chewiness, and a subtle molasses note, while granulated sugar ensures sweetness and helps achieve those desirable crinkle tops.
- Fresh Lemon Zest: This is where the true lemon aroma and intense flavor come from. The zest contains essential oils that are far more potent and fragrant than juice alone. Rubbing it with sugar releases these oils, infusing the brownies with bright citrus.
- Large Eggs & Large Egg Yolk: Eggs provide structure and moisture. The extra egg yolk is key to achieving that ultra-fudgy, dense, and chewy texture, preventing the brownies from becoming cakey.
- Fresh Lemon Juice: Adds the essential tangy and tart notes that balance the sweetness of the sugars and white chocolate. Freshly squeezed is always best for the most vibrant flavor.
- Vanilla Extract: A classic flavor enhancer that rounds out the sweetness and adds warmth, complementing both the lemon and white chocolate.
- All-Purpose Flour: Provides the necessary structure. Proper measurement is crucial here to ensure the brownies remain fudgy and not dry or tough.
- Fine Sea Salt: A pinch of salt is vital for balancing flavors, enhancing the sweetness, and making all the other ingredients sing.
How to Make Them
Creating these fudgy lemon brownies is a straightforward process, but paying attention to each step ensures the best possible outcome. Follow these detailed instructions for a perfect batch every time!

1
Make the brown butter. This initial step is an absolute game-changer and well worth the extra few minutes! Brown butter introduces a rich, nutty, and slightly caramelized flavor that beautifully complements and balances the bright acidity of the lemon. To do this, melt unsalted butter in a light-colored saucepan over medium heat, stirring occasionally. The butter will foam, then the milk solids at the bottom will turn amber. Continue cooking until the butter smells nutty and turns a golden brown. Immediately transfer it to a heat-proof bowl to stop the cooking process and allow it to cool slightly for about 10 minutes.

2
Mix in the white chocolate. While the brown butter is still warm from browning, add the white chocolate chips. The residual heat from the butter will gently melt the chocolate, creating a smooth, luscious mixture. Stir until fully combined and no lumps remain. This forms the rich, fudgy backbone of your lemon brownies. Set this mixture aside to cool slightly while you prepare the wet ingredients.

3
Whisk the wet ingredients. In a separate large bowl, combine the granulated sugar, light brown sugar, and fresh lemon zest. Use your fingertips to rub the lemon zest into the sugars thoroughly. This releases the lemon’s aromatic oils, infusing the sugar with intense citrus flavor. Then, add the eggs, egg yolk, fresh lemon juice, and vanilla extract. Whisk vigorously for about 1-2 minutes until the mixture is visibly lighter in color, thick, and fluffy. This aeration process is the key to achieving those delightful crinkle tops on your brownies! After this, gently fold in the cooled brown butter and white chocolate mixture until just combined.

4
Fold in the dry ingredients. Add the all-purpose flour and fine sea salt to the wet mixture. Using a spatula, gently fold the dry ingredients into the wet until just combined. Be careful not to overmix, as this can develop the gluten in the flour, resulting in tougher, more cake-like brownies instead of the desired fudgy texture. A few streaks of flour are perfectly fine; they will disappear during baking.
While I adore a dense and fudgy treat like these lemon brownies, I also have a soft spot for desserts that are light and airy. If you’re in the mood for something with a delicate crumb and luscious filling, my moist lemon cake with raspberry filling is an absolute must-try! It’s truly the perfect lemon dessert for any celebration.

5
Spread the brownie batter into an 8×8 baking pan. Line your chosen metal 8×8 baking pan with parchment paper, leaving an overhang on the sides to easily lift the brownies out later. Evenly spread the rich lemon brownie batter into the prepared pan using an offset spatula. Bake the brownies in your preheated oven at 350°F (180°C) for 25-35 minutes, or until the top is lightly golden brown and a toothpick inserted into the center comes out with a few moist crumbs. Avoid overbaking, as this can lead to dry brownies.

6
Cover with lemon icing. Once the brownies have completely cooled in the pan on a wire rack, prepare your vibrant lemon icing by whisking powdered sugar with fresh lemon juice until smooth. Spread the icing evenly over the cooled brownies. For beautifully clean slices, allow the icing to set completely before cutting. A pro tip for neat squares: wipe your knife clean with a damp cloth between each cut!
Expert Tips for the Best Lemon Brownies
Achieving bakery-quality fudgy lemon brownies is easy with a few simple tricks. Keep these tips in mind for consistently perfect results:
- Measure Your Flour Correctly: This is arguably the most crucial baking tip! Never scoop your measuring cup directly into the flour bag. This compacts the flour, leading you to use too much, which results in dry, tough brownies. Instead, use the “spoon and level” method: fluff your flour, then spoon it into your measuring cup and level it off with the back of a knife. For the most accurate results, a kitchen scale is highly recommended.
- Don’t Skip the Brown Butter: While it’s an extra step, brown butter adds an incredible depth of flavor that cannot be replicated. It transforms the simple butter into a rich, nutty foundation that perfectly complements the bright lemon and creamy white chocolate.
- Use Fresh Lemon Juice and Zest: The quality of your lemons directly impacts the flavor of these brownies. Freshly squeezed lemon juice and freshly grated zest will provide the most vibrant, authentic lemon flavor. Bottled lemon juice can be used in a pinch, but the taste won’t be as bright or aromatic.
- Whisk Wet Ingredients Thoroughly: The step where you whisk the eggs, sugars, and lemon zest for 1-2 minutes is vital for creating those desirable crinkle tops. Don’t rush this process; the mixture should become visibly lighter and fluffier.
- Avoid Overmixing the Dry Ingredients: Once the flour is added, mix only until just combined. Overmixing develops gluten, which can make your brownies tough and cakey rather than deliciously fudgy.
- Choose the Right Baking Pan: A light-colored metal 8×8 baking pan is ideal for even baking. Darker pans can cause the edges to cook faster, and ceramic or glass pans conduct heat differently, potentially requiring adjusted baking times. Line your pan with parchment paper, leaving an overhang, for easy removal.
- Don’t Overbake! A common mistake that leads to dry brownies. The brownies are done when the edges are set and lightly golden, and a toothpick inserted into the center comes out with moist crumbs, not wet batter. Remember, they will continue to set as they cool.
- Cool Completely Before Glazing and Cutting: Patience is key! Glazing warm brownies will cause the icing to melt and run. Waiting until they are fully cool ensures the icing sets properly and allows for much cleaner slices.
By the way, if you find yourself with extra lemons after making these amazing brownies, don’t let them go to waste! You can easily freeze both the zest and the juice in ice cube trays or airtight containers. Then, use them whenever you’re ready to whip up another delightful citrus treat, like my lemon poppy seed cake with cream cheese frosting or these irresistible cinnamon roll-inspired lemon sweet rolls!

Storage and Freezing Instructions
To keep your fudgy lemon brownies fresh and delicious, follow these simple storage tips:
- Room Temperature: Sliced lemon brownies can be stored in an airtight container at room temperature for up to 3-4 days. For best results, place a piece of parchment paper between layers to prevent sticking. Many find these brownies taste even better on the second day as the flavors meld and deepen!
- Refrigeration: While not strictly necessary, if you live in a very warm climate or prefer your brownies chilled, they can be stored in an airtight container in the refrigerator for up to a week. Bring them to room temperature before serving for the best texture.
- Freezing: These lemon brownies freeze beautifully!
- To freeze whole brownies: Once completely cooled and preferably before glazing (as the glaze can sometimes become a bit sticky or melt slightly upon thawing), wrap the entire slab tightly with plastic wrap, then an additional layer of aluminum foil to prevent freezer burn. They can be frozen for up to 1 month.
- To freeze individual slices: Glaze the brownies and let the icing set. Cut them into individual squares, then wrap each piece tightly in plastic wrap and place them in an airtight freezer-safe container or bag. This allows you to thaw just one or two as needed.
- Thawing: When ready to enjoy, simply remove the brownies from the freezer and let them thaw at room temperature for a few hours. If you froze them unglazed, you can whip up a fresh batch of lemon icing just before serving for that perfect finish.
Frequently Asked Questions (FAQs)
What makes these brownies fudgy instead of cakey?
Several factors contribute to the fudgy texture: a higher fat-to-flour ratio, the inclusion of white chocolate, and an extra egg yolk. Additionally, thoroughly whisking the wet ingredients adds structure while carefully folding in dry ingredients prevents overmixing, which can develop gluten and lead to a cakey texture.
Can I use bottled lemon juice?
While fresh lemon juice and zest are highly recommended for the most vibrant and authentic flavor, bottled lemon juice can be used in a pinch. However, you might find the lemon flavor to be slightly less bright and aromatic.
How do I get those perfect crinkle tops?
The key to crinkle tops lies in whisking the eggs, sugars, and lemon zest vigorously for 1-2 minutes until the mixture is light, thick, and fluffy. This aeration, combined with the right balance of sugar, creates a delicate crust on top during baking.
What kind of white chocolate should I use?
For the best flavor and texture, use good quality white chocolate chips or a chopped white chocolate bar. Look for brands with a higher cocoa butter content, as this will result in a smoother melt and richer flavor. Avoid “white baking chips” that often contain little to no cocoa butter, as they may not melt as smoothly or contribute to the fudgy texture as effectively.
My lemon glaze is too thick/thin. How can I fix it?
If your glaze is too thick, add more lemon juice (a quarter teaspoon at a time) until it reaches your desired consistency. If it’s too thin, whisk in a little more powdered sugar (a tablespoon at a time) until it thickens up. The ideal consistency should be pourable but still thick enough to coat the back of a spoon.
Can I add poppy seeds to these lemon brownies?
Absolutely! Lemon and poppy seeds are a classic pairing. You can add 1-2 tablespoons of poppy seeds to the dry ingredients before folding them into the wet batter for a delightful texture and added visual appeal.
How do I know when the brownies are done baking?
The brownies are done when the edges are set and lightly golden brown, and the center still looks a bit soft but not wet. A toothpick inserted into the center should come out with moist crumbs attached, but not raw batter. Remember that brownies continue to bake slightly as they cool in the pan, so it’s better to slightly underbake than overbake for maximum fudginess.
Can I make these in a different size pan?
Yes, but you’ll need to adjust the baking time. For a 9×9-inch pan, they might bake a bit faster (around 20-30 minutes). For a 9×13-inch pan, you might need to double the recipe. Always keep a close eye on them and use the toothpick test for doneness, as baking times will vary.
If you tried this fudgy lemon brownie recipe, or any other recipe on my website, please let me know how it went in the comments section below; I love hearing from you! Also, please leave a star rating while you’re there to help other bakers discover this delicious treat! You can also tag me on Instagram or Facebook so I can see your wonderful creations!

Fudgy Lemon Brownies with Lemon Icing
Equipment
- metal 8×8 baking pan
Ingredients
Brownie Batter
- 3/4 cup unsalted butter
- 1/2 cup white chocolate chips
- 1/4 cup light brown sugar, packed
- 1 cup granulated sugar
- 1 tablespoon fresh lemon zest
- 2 large eggs
- 1 large egg yolk
- 2 tablespoon fresh lemon juice
- 2 teaspoons vanilla extract
- 1 3/4 cups all-purpose flour, *see notes for measuring*
- 1 teaspoon fine sea salt
Lemon Glaze
- 1 cup powdered sugar
- 2-3 tbsp fresh lemon juice
Instructions
- Preheat your oven to 350°F (180°C). Prepare a metal 8×8 baking pan by lining it with parchment paper, allowing some overhang on two sides for easy removal later.
- In a light-colored saucepan, cook the unsalted butter over medium heat until it browns. Stir frequently to ensure even browning. Once the butter turns a rich amber color and smells nutty, immediately scrape all of the brown butter, including the browned bits at the bottom, into a shallow heatproof container. Set it aside to cool for about 10 minutes. Then, add the white chocolate chips to the warm brown butter and stir until they are fully melted and smooth. Set this mixture aside to cool further.3/4 cup (170 g) unsalted butter, 1/2 cup (90 g) white chocolate chips
- In a large mixing bowl, combine the light brown sugar, granulated sugar, and fresh lemon zest. Use your fingertips to rub the lemon zest into the sugars thoroughly for about 30 seconds. This helps release the lemon’s essential oils, infusing the sugar with intense flavor. Next, whisk in the eggs, egg yolk, fresh lemon juice, and vanilla extract. Whisk vigorously for about 1-2 minutes until the mixture is light in color, thick, and fluffy. This step is essential for achieving the crinkle tops!1/4 cup (50 g) light brown sugar, 1 cup (200 g) granulated sugar, 1 tablespoon fresh lemon zest, 2 (100 g) large eggs, 1 (18 g) large egg yolk, 2 tablespoon fresh lemon juice, 2 teaspoons vanilla extract
- Pour the cooled brown butter and white chocolate mixture into the whisked wet ingredients. Whisk until everything is smoothly combined and uniform in color.
- Add the all-purpose flour and fine sea salt to the wet ingredients. Using a spatula, gently fold until just combined. Be careful not to overmix, as this can lead to tough brownies. A few streaks of flour are acceptable.1 3/4 cups (230 g) all-purpose flour, 1 teaspoon fine sea salt
- Evenly spread the brownie batter into the prepared, lined baking pan. Bake in the preheated oven for 25-35 minutes. The brownies are done when the top is lightly golden brown, and a toothpick inserted into the center comes out with moist crumbs attached (not wet batter). Avoid overbaking for the fudgiest results.
- Once baked, remove the pan from the oven and let it cool completely on a wire rack. While the brownies are cooling, you can prepare the lemon icing.
- To make the lemon icing, whisk together the powdered sugar and 2-3 tablespoons of fresh lemon juice in a small bowl until the mixture is smooth and free of lumps. Adjust the amount of lemon juice to achieve your desired consistency – thick enough to coat, but still spreadable.1 cup powdered sugar, 2-3 tbsp fresh lemon juice
- Once the brownies are completely cool (this is crucial!), use the parchment paper overhang to gently lift them out of the pan and transfer them to a cutting board. Spread the prepared lemon icing evenly over the top using an offset spatula. If desired, sprinkle with extra fresh lemon zest for an extra pop of flavor and visual appeal. Let the icing set completely for at least 30 minutes before slicing. For beautifully clean slices, wipe your knife clean with a damp cloth between each cut. Enjoy your perfectly fudgy lemon brownies!
Video
Notes
The calorie information provided for the recipe is an estimate. The accuracy of the calories listed is not guaranteed.