I have a soft spot for lemony sweets, and these lemon brownies are one of my go-to treats when I want something bright, buttery, and less fussy than a layer cake. They’re dense like a classic brownie but flavored with fresh lemon juice and zest, so every square has that sunny lift. I first made them for a spring picnic and they vanished faster than I expected — sticky glaze and all. If you like lemon bars but want something a little more cake‑like and easy to slice, this is the bake for you. For another tangy, dairy-forward twist on brownies, I sometimes pair ideas from cottage cheese brownies into my baking rotation.
Why you’ll love this dish
These lemon brownies are perfect when you want bright flavor without fuss. They’re:
- Quick: simple batter, single pan, about 25–30 minutes in the oven.
- Crowd-pleasing: sweeter than lemon bars but still refreshingly tart.
- Versatile: serve at brunch, afternoon tea, potlucks, or as a light dessert after dinner.
- Forgiving: the batter tolerates small timing or mixing differences, and the glaze hides minor imperfections.
Chef’s note: using fresh lemon juice and zest makes a huge difference — bottled juice won’t deliver the same aromatic top note.
How this recipe comes together
Step-by-step overview
- Melt butter and whisk it with sugar to form a glossy base. This creates moisture and tenderness.
- Add eggs one at a time to build the batter’s structure and aeration.
- Fold in lemon juice and zest for flavor, then incorporate the dry mix (flour, baking powder, salt) just until combined.
- Bake in a 9×13 pan until the center sets but still moist.
- Once cooled, drizzle a simple powdered sugar + lemon glaze that soaks slightly into the top, giving a shiny, tart finish.
This overview helps you see the rhythm: wet base → eggs → citrus → dry fold → bake → glaze.
What you’ll need
- 1 cup unsalted butter, melted (room temperature before mixing)
- 2 cups sugar
- 4 large eggs
- 1/4 cup lemon juice (fresh is best)
- 1 tablespoon lemon zest
- 2 cups all-purpose flour
- 1/2 teaspoon baking powder
- 1/4 teaspoon salt
- 1 cup powdered sugar (for glaze)
- 2–3 tablespoons lemon juice (for glaze)
Notes and substitutions:
- Butter: you can use salted butter but reduce added salt to a pinch.
- Flour: swap up to 1/4 cup whole wheat for nuttiness, but don’t replace more or brownies may be dense.
- Lemon: if you’re short on fresh lemons, increase zest slightly and use bottled juice as a last resort.
Step-by-step instructions
- Preheat the oven to 350°F (175°C). Grease a 9×13-inch baking dish.
- In a large bowl, combine the melted butter and sugar. Whisk until smooth and glossy.
- Add the eggs one at a time, beating well after each addition until slightly aerated.
- Stir in the 1/4 cup lemon juice and lemon zest until evenly distributed.
- In a separate bowl, whisk together the flour, baking powder, and salt.
- Gradually fold the dry ingredients into the wet ingredients. Mix just until no streaks of flour remain.
- Pour the batter into the prepared pan and smooth the top with a spatula.
- Bake for 25–30 minutes, until edges are set and a toothpick inserted in the center comes out clean or with a few moist crumbs.
- Let the brownies cool completely in the pan on a wire rack.
- Make the glaze by whisking the powdered sugar with 2–3 tablespoons of lemon juice until smooth. Spread the glaze over the cooled brownies, let it set, then cut into squares and serve.

Best ways to enjoy it
- Serve warm with a scoop of vanilla ice cream for contrast between cool cream and tart lemon.
- For brunch, plate a square with fresh berries and a dusting of extra lemon zest.
- Cut into small squares and present on a dessert tray for parties — the glaze keeps them attractive and not too messy.
- Pair with a bright tea (earl grey or jasmine) or a chilled glass of sparkling wine for adults.
Storage and reheating tips
- Room temperature: Keep brownies in an airtight container at room temperature for up to 3 days.
- Refrigerator: To extend freshness, refrigerate for up to 7 days. Bring to room temp before serving for best texture.
- Freezing: Wrap individual squares tightly in plastic wrap and freeze in a sealed container for up to 2 months. Thaw overnight in the fridge or at room temperature for a few hours.
- Reheating: Warm a single square in the microwave for 8–12 seconds to revive the softness. Avoid overheating or the glaze may become tacky.
Food safety tip: Because these brownies contain eggs, ensure they’re fully set before storing long term; don’t leave them at room temperature for more than two hours in warm conditions.
Pro chef tips
- Don’t overmix once you add the flour — overworking develops gluten and makes the brownies tough.
- Zest before juicing the lemons to maximize the aromatic oils.
- If your melted butter is hot, let it cool slightly before mixing with eggs to avoid scrambling.
- For an extra glossy top, brush a thin layer of glaze when brownies are still slightly warm, then finish with another layer after they cool.
Creative twists
- Blueberry-lemon: Fold 1 cup fresh or thawed frozen blueberries into the batter before baking.
- Shortbread crust: Press a thin layer of shortbread dough on the bottom of the pan and bake together for a crunchy base.
- Lemon poppy seed: Add 1–2 tablespoons of poppy seeds for texture and visual interest.
- Lighter version: Replace 1/2 cup butter with plain Greek yogurt to cut fat and add tang (expect a slightly denser crumb). For another dairy-forward lemon dessert idea, try my notes inspired by a lemon cottage cheese cake approaches.
Helpful answers
Q: How long does it take from start to finish?
A: Active prep is about 15–20 minutes. Baking is 25–30 minutes. Cooling and glazing add another 30–45 minutes depending on how quickly they set.
Q: Can I make these gluten-free?
A: Yes — use a 1:1 gluten-free all-purpose flour blend that contains xanthan gum. Texture will be slightly different but still delicious.
Q: Can I skip the glaze?
A: You can, but the glaze adds a bright, sweet-tart finish and helps keep the top from drying. A light dusting of powdered sugar is an alternative.
Q: Will these be too sweet?
A: They are on the sweeter side to balance the lemon. If you prefer tang over sugar, reduce the sugar by 1/4 cup and check sweetness after baking.
Q: Can I use bottled lemon juice?
A: Fresh lemon juice gives the best flavor. Bottled juice works in a pinch but lacks the brightness of fresh citrus.
Q: Are these safe to make ahead for parties?
A: Yes. Make them a day ahead, keep covered at room temp or refrigerated, and glaze the morning of if possible for the freshest look.
Conclusion
If you want a sunny, easy dessert that’s a cross between a lemon bar and a brownie, these lemon brownies are a winner — simple to make, easy to scale, and bright enough to brighten any dessert table. For another tested lemon brownie formula and extra visual tips, see this detailed I Heart Naptime lemon brownies recipe.
Print
Lemon Brownies
- Total Time: 50 minutes
- Yield: 12 servings
- Diet: Vegetarian
Description
Bright and buttery lemon brownies that are dense like a classic brownie but with a refreshing lemon flavor.
Ingredients
- 1 cup unsalted butter, melted
- 2 cups sugar
- 4 large eggs
- 1/4 cup fresh lemon juice
- 1 tablespoon lemon zest
- 2 cups all-purpose flour
- 1/2 teaspoon baking powder
- 1/4 teaspoon salt
- 1 cup powdered sugar (for glaze)
- 2–3 tablespoons lemon juice (for glaze)
Instructions
- Preheat the oven to 350°F (175°C). Grease a 9×13-inch baking dish.
- In a large bowl, combine the melted butter and sugar. Whisk until smooth and glossy.
- Add the eggs one at a time, beating well after each addition until slightly aerated.
- Stir in the lemon juice and lemon zest until evenly distributed.
- In a separate bowl, whisk together the flour, baking powder, and salt.
- Gradually fold the dry ingredients into the wet ingredients. Mix just until no streaks of flour remain.
- Pour the batter into the prepared pan and smooth the top with a spatula.
- Bake for 25–30 minutes, until edges are set and a toothpick inserted in the center comes out clean or with a few moist crumbs.
- Let the brownies cool completely in the pan on a wire rack.
- Make the glaze by whisking the powdered sugar with 2–3 tablespoons of lemon juice until smooth. Spread the glaze over the cooled brownies, let it set, then cut into squares and serve.
Notes
Using fresh lemon juice and zest makes a significant difference in flavor. Don’t overmix once you add the flour.
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American