Sourdough brownies are a delicious twist on classic brownies, combining the rich, chocolatey goodness of traditional brownies with the subtle tang and depth of flavor from sourdough discard. If you’re looking for a way to use up excess sourdough starter, this brownie recipe is a perfect solution.
Baking with sourdough discard not only enhances the texture of the brownies but also gives them a unique complexity that sets them apart from regular brownies. The natural fermentation in the discard adds moisture, making the brownies rich and fudgy while also helping to balance the sweetness.
Whether you’re a fan of fudgy sourdough brownies or prefer a slightly cakier texture, this recipe can be adjusted to match your preference. Plus, it’s a great way to make use of an active sourdough starter without the need for extra leavening agents. If you’ve never tried baking with sourdough in desserts before, this is an easy and delicious place to start.
Table of Contents
Key Benefits
Sourdough brownies offer more than just a rich chocolate flavor—they bring unique texture, added moisture, and potential health benefits compared to traditional brownies. Here’s why you’ll love baking with sourdough discard:
1. Enhanced Texture and Flavor
The addition of sourdough discard makes brownies extra fudgy and dense, giving them a melt-in-your-mouth texture. The mild tang from the discard enhances the chocolate flavor, creating a well-balanced sweetness with deeper complexity.
2. A Great Way to Use Sourdough Discard
If you maintain a sourdough starter, you likely have excess discard that needs to be used up. Instead of throwing it away, you can repurpose it in brownie recipes, reducing waste while making something delicious.
3. Improved Moisture Retention
Sourdough discard adds hydration to the batter, keeping the brownies moist for longer. This means they stay soft and chewy even days after baking, unlike some traditional brownies that dry out quickly.
4. Easier Digestibility
The natural fermentation process in sourdough helps break down gluten and starches, which may make sourdough-based baked goods easier to digest. While brownies aren’t a health food, using sourdough discard could be a better option for some individuals with mild gluten sensitivities.
5. No Extra Leavening Required
Sourdough discard acts as a natural tenderizer, reducing the need for additional baking powder or baking soda. This helps create a denser, fudgier brownie without relying on chemical leaveners.
By incorporating sourdough discard into brownies, you not only get a richer texture but also a unique way to experiment with sourdough baking beyond bread.
Ingredients

To make rich and fudgy sourdough brownies, you’ll need a combination of pantry staples and sourdough discard. Each ingredient plays a key role in creating the perfect balance of texture and flavor.
Essential Ingredients:
- 1/2 cup (113g) unsalted butter – Provides richness and moisture.
- 4 oz (113g) dark chocolate, chopped – Melts into the batter for a deep chocolate flavor.
- 1/4 cup (21g) cocoa powder – Enhances the chocolate intensity. Dutch process cocoa works best.
- 1/2 cup (100g) granulated sugar – Adds sweetness and helps create a shiny brownie top.
- 1/2 cup (100g) brown sugar – Adds moisture and a slight caramel-like depth.
- 2 large eggs (room temperature) – Contribute to structure and richness.
- 1 teaspoon vanilla extract – Deepens the chocolate taste with a warm, aromatic note.
- 1/2 cup (120g) sourdough discard – Adds moisture, a slight tang, and improves texture.
- 1/2 teaspoon salt – Balances the sweetness.
- 1/2 cup (63g) all-purpose flour – Provides structure while keeping the brownies fudgy.
- 1/2 teaspoon baking powder – Helps with slight lift while maintaining density.
- 1/2 cup (85g) chocolate chips – Optional, for extra pockets of melted chocolate.
Optional Add-ins & Variations:
- Brown butter: Swap regular butter for brown butter to add a nutty depth.
- Nuts: Stir in chopped walnuts or pecans for crunch.
- Espresso powder: A teaspoon intensifies the chocolate flavor.
- Sea salt: A sprinkle on top enhances the sweetness.
With these ingredients, you’re set to make a batch of decadent sourdough brownies that are rich, fudgy, and irresistibly good.
How to Make Sourdough Brownies

Making sourdough brownies is simple and requires just a few steps. Follow this method to achieve a rich, fudgy texture with a deep chocolate flavor.
Step 1: Prepare the Baking Pan
Line an 8×8-inch baking pan with parchment paper, leaving some overhang on the sides for easy removal. Lightly grease the paper to prevent sticking. Preheat your oven to 350°F (175°C).
Step 2: Melt the Butter and Chocolate
In a heatproof bowl, combine unsalted butter and chopped dark chocolate. Melt them together using a double boiler or microwave in 20-second intervals, stirring in between. Once smooth, mix in the cocoa powder to enhance the chocolate flavor. Let the mixture cool slightly.
Step 3: Whisk the Sugars and Eggs
In a separate large bowl, combine granulated sugar and brown sugar. Add eggs one at a time, whisking until the mixture is thick and slightly pale. This step helps create a crackly top on the brownies. Stir in the vanilla extract.
Step 4: Incorporate the Sourdough Discard
Add sourdough discard to the sugar mixture and whisk until fully combined. The discard not only enhances the texture but also helps balance the sweetness with a slight tang.
Step 5: Combine the Wet and Dry Ingredients
Gently fold the melted chocolate mixture into the batter. Then, sift together the flour, baking powder, and salt before gently incorporating them into the batter. Mix just until no streaks remain—overmixing can affect the texture. If adding chocolate chips, fold them in at this stage.
Step 6: Bake the Brownies
Transfer the mixture into the lined baking pan, smoothing the top for even baking. Bake for about 28–32 minutes, or until the edges are set and a toothpick inserted in the center shows a few sticky crumbs.
Step 7: Cool and Slice
Let the brownies cool in the pan for at least 20-30 minutes before lifting them out using the parchment paper overhang. For neat slices, use a sharp knife and clean it between each cut.
Now you have a batch of fudgy sourdough brownies with a deep chocolate taste and a slight tang from the discard. Enjoy them warm or let them set for an even richer texture!
Pro Tips and Variations
To make your sourdough brownies even more delicious, here are some expert tips and variations to enhance both flavor and texture:
Pro Tips for Perfect Brownies
- Use Room Temperature Ingredients: For the best texture, make sure your eggs, butter, and sourdough discard are at room temperature before mixing. This helps them combine more smoothly with the other ingredients and creates a uniform batter.
- Don’t Overmix the Batter: Stir the wet and dry ingredients until just combined. Overmixing can lead to dense or dry brownies instead of the fudgy, rich texture you’re aiming for.
- Check the Brownies Early: Ovens vary, so start checking your brownies a few minutes before the suggested baking time. A toothpick inserted in the center should come out with a few moist crumbs for that perfect fudgy texture.
- Let the Brownies Cool Completely: While it’s tempting to dig in while they’re still warm, letting your brownies cool for 20-30 minutes helps them firm up, making them easier to slice and improving their texture.
Delicious Variations to Try
- Brown Butter Sourdough Brownies: Replace regular butter with brown butter to add a nutty, caramel-like depth to the flavor. Simply melt the butter in a pan over medium heat and cook until it turns golden brown and smells nutty, then let it cool slightly before adding to the batter.
- Add Chocolate Chips or Chunks: For extra chocolatey goodness, stir in dark chocolate chips or chopped chocolate into the batter before baking. This will create gooey pockets of melted chocolate throughout the brownies.
- Nuts for Crunch: If you enjoy a bit of crunch in your brownies, try adding chopped walnuts, pecans, or almonds to the batter. These add a delightful texture and complement the rich chocolate flavor.
- Espresso Powder: A teaspoon of espresso powder will enhance the chocolate flavor, giving your brownies a slightly mocha-like twist without adding a strong coffee taste.
- Vegan or Eggless Brownies: To make this recipe vegan, substitute the eggs with flax eggs (1 tablespoon flaxseed meal + 2.5 tablespoons water per egg) and use a plant-based butter or oil. For an eggless version, you can use the same flax egg substitution.
- Sea Salt on Top: Sprinkle a small amount of flaked sea salt on top of the brownies before baking or just after they come out of the oven. The salt elevates the sweetness and balances the richness of the chocolate.
Tips for Storing and Freezing
- Storing: Once the brownies have cooled, store them in an airtight container at room temperature for up to 4-5 days. For longer shelf life, place a piece of wax paper between layers of brownies to keep them from sticking together.
- Freezing: To freeze your brownies, wrap them tightly in plastic wrap or aluminum foil and place them in a freezer-safe bag. They can be stored for up to 3 months in the freezer without losing freshness. Simply thaw at room temperature before serving or reheat them gently in the oven for a warm treat.
By using these tips and variations, you can customize your sourdough brownies to fit your taste preferences and elevate the flavor profile with just a few simple tweaks!
Serving Suggestions
Sourdough brownies are delicious on their own, but there are plenty of creative ways to serve and enjoy them. Below are some creative ways to serve and enjoy your sourdough brownies:
1. Warm with a Scoop of Ice Cream
For an indulgent treat, serve your sourdough brownies warm with a scoop of vanilla ice cream or your favorite flavor. The contrast of the warm, fudgy brownies and the cold, creamy ice cream is irresistible. For an extra twist, try caramel ice cream or chocolate chip ice cream to complement the rich chocolate flavor of the brownies.
2. Drizzle with Chocolate or Caramel Sauce
For those who love extra sweetness, drizzle melted chocolate, caramel sauce, or peanut butter over the top of your brownies. The added layer of flavor creates a luxurious dessert experience, perfect for any special occasion or just a treat for yourself.
3. Serve with Fresh Berries
Balance the richness of the brownies with some fresh berries such as raspberries, strawberries, or blueberries. The natural acidity of the berries cuts through the fudgy texture of the brownies, creating a refreshing contrast and adding a pop of color to your plate.
4. Make Brownie Sundaes
Layer your brownies with whipped cream, chocolate syrup, and a cherry on top for a fun, classic brownie sundae. You can also experiment by adding crushed nuts, mini marshmallows, or sprinkles for extra texture and sweetness.
5. Pair with a Hot Beverage
Sourdough brownies are a great companion to a variety of beverages. Try them with a warm cup of coffee, hot chocolate, or a chai latte. The depth of the chocolate flavor pairs wonderfully with the boldness of these drinks, creating a cozy, comforting experience.
6. Brownie Parfaits
For a show-stopping dessert, cut the brownies into small squares and layer them with whipped cream, chocolate mousse, or pudding in individual cups. Top with crushed cookies or chocolate chips for an added crunch. These brownie parfaits are perfect for parties or holiday gatherings.
7. Enjoy with a Glass of Milk
For a simple yet satisfying treat, enjoy a piece of your sourdough brownie with a glass of cold milk. The creamy milk helps balance the richness of the brownies, making it a classic pairing that never gets old.
No matter how you serve them, sourdough brownies are sure to impress with their decadent texture and rich flavor. Let your creativity shine, and try some of these suggestions to enhance your brownie experience!
Conclusion
Sourdough brownies offer a delicious twist on the classic brownie, blending the tangy flavor of sourdough discard with the rich, fudgy texture of traditional brownies. This unique combination enhances the overall flavor profile, making for a treat that’s indulgent yet slightly different from your typical brownie recipe.
Whether you stick to the basic recipe or try out the variations and pro tips, there’s no doubt that sourdough brownies are a crowd-pleaser. From the melt-in-your-mouth texture to the added depth from the sourdough discard, each bite is a delightful experience. Plus, they’re a great way to use up leftover sourdough starter that you might have lying around!
With a few simple ingredients and easy steps, you can create a dessert that’s perfect for any occasion—whether it’s a casual snack or a special treat to share with friends and family. The beauty of sourdough brownies lies in their versatility. You can enjoy them on their own or get creative with different serving ideas, from pairing them with ice cream to adding in chocolate chunks or nuts.
So, why not give this recipe a try? It’s an easy way to elevate your brownie game while reducing food waste. Your taste buds will thank you!
Learn about the potential health advantages of consuming sourdough bread, including its impact on gut health, in this Mayo Clinic article.

Sourdough Brownies
Ingredients
Essential Ingredients:
- 1/2 cup 113g unsalted butter – Provides richness and moisture.
- 4 oz 113g dark chocolate, chopped – Melts into the batter for a deep chocolate flavor.
- 1/4 cup 21g cocoa powder – Enhances the chocolate intensity. Dutch process cocoa works best.
- 1/2 cup 100g granulated sugar – Adds sweetness and helps create a shiny brownie top.
- 1/2 cup 100g brown sugar – Adds moisture and a slight caramel-like depth.
- 2 large eggs room temperature – Contribute to structure and richness.
- 1 teaspoon vanilla extract – Deepens the chocolate taste with a warm aromatic note.
- 1/2 cup 120g sourdough discard – Adds moisture, a slight tang, and improves texture.
- 1/2 teaspoon salt – Balances the sweetness.
- 1/2 cup 63g all-purpose flour – Provides structure while keeping the brownies fudgy.
- 1/2 teaspoon baking powder – Helps with slight lift while maintaining density.
- 1/2 cup 85g chocolate chips – Optional, for extra pockets of melted chocolate.
Optional Add-ins & Variations:
- Brown butter: Swap regular butter for brown butter to add a nutty depth.
- Nuts: Stir in chopped walnuts or pecans for crunch.
- Espresso powder: A teaspoon intensifies the chocolate flavor.
- Sea salt: A sprinkle on top enhances the sweetness.
Instructions
Step 1: Prepare the Baking Pan
- Line an 8×8-inch baking pan with parchment paper, leaving some overhang on the sides for easy removal. Lightly grease the paper to prevent sticking. Preheat your oven to 350°F (175°C).
Step 2: Melt the Butter and Chocolate
- In a heatproof bowl, combine unsalted butter and chopped dark chocolate. Melt them together using a double boiler or microwave in 20-second intervals, stirring in between. Once smooth, mix in the cocoa powder to enhance the chocolate flavor. Let the mixture cool slightly.
Step 3: Whisk the Sugars and Eggs
- In a separate large bowl, combine granulated sugar and brown sugar. Add eggs one at a time, whisking until the mixture is thick and slightly pale. This step helps create a crackly top on the brownies. Stir in the vanilla extract.
Step 4: Incorporate the Sourdough Discard
- Add sourdough discard to the sugar mixture and whisk until fully combined. The discard not only enhances the texture but also helps balance the sweetness with a slight tang.
Step 5: Combine the Wet and Dry Ingredients
- Gently fold the melted chocolate mixture into the batter. Then, sift together the flour, baking powder, and salt before gently incorporating them into the batter. Mix just until no streaks remain—overmixing can affect the texture. If adding chocolate chips, fold them in at this stage.
Step 6: Bake the Brownies
- Transfer the mixture into the lined baking pan, smoothing the top for even baking. Bake for about 28–32 minutes, or until the edges are set and a toothpick inserted in the center shows a few sticky crumbs.
Step 7: Cool and Slice
- Let the brownies cool in the pan for at least 20-30 minutes before lifting them out using the parchment paper overhang. For neat slices, use a sharp knife and clean it between each cut.
Video
Notes
- Prep Time: 15 minutes
- Cook Time: 30-35 minutes
- Total Time: 45-50 minutes
- Servings: 12-16 brownies
- Calories: Approximately 250-280 per serving (based on 12 servings)
FAQs
Here are answers to some of the most commonly asked questions about sourdough brownies:
What does sourdough do to brownies?
Sourdough discard in brownies adds a subtle tangy flavor, balancing out the richness of the chocolate. It also contributes to the texture, making the brownies denser and fudgier. The slight acidity from the sourdough starter helps enhance the chocolate flavor, giving the brownies a more complex taste.
Are sourdough brownies healthier than regular brownies?
While sourdough brownies are not necessarily “healthier” than regular brownies, they do have the added benefit of using sourdough discard, which is often wasted. They may also have a slightly lower sugar content depending on the recipe, but they are still a treat meant to be enjoyed in moderation. Sourdough brownies offer a creative way to reduce food waste without compromising on flavor.
Can I add sourdough starter to brownie mix?
Yes, you can add sourdough starter to brownie mix for a unique twist. However, if you’re using a pre-made brownie mix, it’s best to adjust the other ingredients accordingly to maintain the right balance of moisture and texture. Adding a small amount of sourdough starter will infuse the brownies with a slight tang and help create a denser, fudgier texture.
What makes brownies fudgy vs cakey?
Fudgy brownies have a dense, moist texture due to a higher fat-to-flour ratio, which is typically achieved by using more butter, chocolate, and sugar. Cakey brownies, on the other hand, are lighter and airier because they have more flour and less fat. To make your brownies fudgy, stick to a recipe that uses plenty of butter or oil, and avoid over-baking them.
What are the 5 ingredient brownies?
Five-ingredient brownies typically include butter, sugar, eggs, flour, and chocolate (or cocoa powder). This minimalist recipe focuses on the basics, allowing the chocolate flavor to shine through. Some recipes may also add a pinch of salt or vanilla extract for added depth, but the core ingredients remain simple.
Are sourdough brownies healthy?
Sourdough brownies are still a dessert and should be enjoyed in moderation. While they do incorporate sourdough discard, which is a great way to reduce food waste, they still contain sugar, butter, and other ingredients that contribute to their indulgent nature. However, using sourdough starter in place of some of the fat or sugar could offer a slightly healthier alternative without sacrificing flavor.
Explore our Crispy Sourdough Crackers recipe for another delightful way to utilize your sourdough starter.