As I rummaged through my kitchen while contemplating what to bake, a forgotten bowl of sourdough discard waved at me from the corner—my little food hero! That’s when the idea for Easy Sourdough Discard Brownies hit me. Not only do these fudgy brownies take hardly any time to whip up, but they also breathe new life into what would otherwise go to waste. With a rich and chewy texture that will melt in your mouth, these brownies deliver all the chocolatey goodness you crave without any of the tang from sourdough. Plus, they’re super versatile—think peanut butter chips or even a swirl of raspberry jam to jazz things up! Ready to transform your discard into a delightful treat? Let’s dive in and bake something unforgettable!

Why use sourdough discard in brownies?
Deliciously Unique: These sourdough discard brownies offer a delightful twist on traditional recipes, ensuring you enjoy every fudgy bite.
No Waste: By utilizing your sourdough discard, you’re helping reduce food waste while creating an indulgent treat.
Versatile Options: Feel free to experiment with mix-ins like peanut butter chips or raspberry jam for a personalized touch!
Quick and Easy: This effortless recipe has minimal prep time, making it perfect for both seasoned chefs and busy home cooks.
Crowd-Pleasing: Serve these to friends and family, and watch them disappear in no time. You might want to check out my other dessert favorites like Chocolate Chip Cookies for more delicious inspirations!
Irresistible Texture: These brownies combine chewy edges with a fudgy center, creating a wonderful treat that chocolate lovers will adore.
Sourdough Discard Brownie Ingredients
• Get ready to create decadent brownies with your sourdough starter discard!
For the Brownie Batter
- Unsalted Butter – Adds richness and moisture; you can substitute with margarine if desired.
- Granulated Sugar – Sweetens your brownies and contributes to their overall texture; consider using brown sugar for an extra depth of flavor.
- Sourdough Starter Discard (unfed) – Keeps the brownies fudgy and acts as a moisture source; make sure it hasn’t been fed recently for the best results.
- Eggs – Binds everything together and adds structure; for a vegan option, substitute with a flax egg.
- Unsweetened Cocoa Powder – Delivers the essential chocolate flavor; always opt for high-quality cocoa for the richest taste.
- All-Purpose Flour – Provides necessary structure; feel free to use gluten-free flour for a gluten-free option.
- Vanilla Extract – Enhances sweetness and overall flavor; pure extract works wonders for a more authentic taste.
- Salt – Helps balance the sweetness, enhancing the overall flavor.
- Chocolate Chips – Brings an extra dose of chocolatey goodness; swap them out for nuts or any other mix-ins you prefer.
Add-Ins & Variations
- Peanut Butter Chips – Elevate your brownies by adding these for a nutty twist!
- Espresso Powder – A pinch can intensify the chocolate flavor, making these brownies even more irresistible.
- Raspberry Jam – Swirl this in the batter for a fruity surprise that complements the chocolate beautifully.
These sourdough discard brownies are not only easy to make but also a fantastic way to minimize waste while enjoying a delicious treat!
Step‑by‑Step Instructions for Sourdough Discard Brownies
Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C), ensuring it’s hot and ready for baking. While the oven heats up, take an 8×8 inch baking pan and line it with parchment paper or grease it lightly. This step will prevent the brownies from sticking, making it easier to slice them after baking.
Step 2: Mix Butter and Sugar
In a large mixing bowl, combine melted unsalted butter with granulated sugar using a whisk. Stir until the mixture is smooth and glossy, which should take about 1-2 minutes. This process helps dissolve the sugar, creating a rich foundation for your delicious sourdough discard brownies.
Step 3: Add Sourdough and Eggs
Next, incorporate the unfed sourdough discard into your buttery mixture along with the eggs and vanilla extract. Mix these ingredients until fully combined, which should take approximately 1-2 minutes. You’ll achieve a slightly lumpy batter, but that’s perfectly fine; just ensure there are no large chunks of sourdough.
Step 4: Combine Dry Ingredients
Now, it’s time to sift in the unsweetened cocoa powder, all-purpose flour, and salt into the wet mixture. Gently fold the dry ingredients into the batter with a spatula, taking care not to overmix. This process typically takes about 1-2 minutes; stop mixing once you see no more flour streaks for that perfect fudgy texture.
Step 5: Fold in Chocolate Chips
For an extra chocolatey touch, fold in the chocolate chips until they are evenly distributed throughout the batter. This step adds delightful pockets of melted chocolate to your sourdough discard brownies. It should only take about 30 seconds, just enough time to ensure even distribution without overworking the batter.
Step 6: Pour and Spread the Batter
Pour the luscious brownie batter into the prepared baking pan, using a spatula to spread it evenly into the corners. Make sure the layer is smooth and level for consistent baking. The key here is to create an even surface to guarantee equally baked and deliciously fudgy brownies.
Step 7: Bake the Brownies
Bake your brownies in the preheated oven for 28-32 minutes. To check for doneness, insert a toothpick into the center; it should come out with a few moist crumbs, which indicates the brownies are perfectly fudgy. Keep an eye on them, as ovens may vary slightly in temperature.
Step 8: Cool and Slice
Once baked, remove the brownies from the oven and allow them to cool in the pan for about 10-15 minutes. After cooling, lift the brownies out using the parchment paper and transfer them to a wire rack to cool completely. Once cool, slice them into squares for serving, and enjoy the fruits of your labor!

What to Serve with Easy Sourdough Discard Brownies?
Indulge in these fudgy delights while exploring delightful pairings that elevate your dessert experience.
- Vanilla Ice Cream: A classic pairing that complements the rich chocolate flavor, creating a heavenly contrast of warm and cold.
- Caramel Sauce: Drizzle over the brownies for an added layer of sweetness that enhances every bite. A scoop of vanilla ice cream alongside makes for an indulgent treat.
- Fresh Berries: Juicy strawberries or raspberries bring a burst of freshness that balances the decadent chocolate beautifully. Their tartness is the perfect counterpoint to the brownies’ sweetness.
- Espresso: A piping hot cup of espresso enhances the chocolate notes and provides a cozy, inviting finish.
- Whipped Cream: Light and airy, a dollop of whipped cream can transform a simple brownie into an elegant dessert. Serve it alongside for a delightful texture contrast!
- Chocolate Milkshake: A creamy chocolate milkshake offers a luxurious accompaniment, intensifying the chocolate experience while adding a fun twist.
- Nutty Trail Mix: A crunchy side of trail mix adds diverse textures and flavors, creating a playful contrast to the fudginess of the brownies.
- Port Wine or Dessert Wine: A glass of sweet wine can elevate your dessert experience, creating a sophisticated pairing that enhances the rich flavors of the brownies.
Whichever you choose, each suggestion complements the incredible flavors of your sourdough discard brownies!
Storage Tips for Sourdough Discard Brownies
Room Temperature: Keep your brownies in an airtight container at room temperature for up to 4 days. This ensures they stay fresh and fudgy without drying out.
Fridge: If you prefer a firmer texture, you can store the brownies in the fridge for up to 7 days. Just be sure to wrap them tightly to prevent moisture loss.
Freezer: To enjoy these delectable sourdough discard brownies later, wrap them individually in cling film and freeze for up to 3 months. Thaw in the fridge or at room temperature before serving.
Reheating: To bring back their soft, fudgy goodness, reheat leftover brownies in the microwave for about 10-15 seconds, or enjoy them warm straight from the oven!
Sourdough Discard Brownies Variations
Feel free to get creative with these brownies and customize them to suit your taste and dietary preferences!
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Melted Chocolate: Substitute cocoa powder with an equal amount of melted chocolate for an intensely rich flavor. Just remember, it may yield denser brownies.
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Peanut Butter Chips: Add a delightful nutty twist by folding in peanut butter chips, giving the brownies an extra layer of sweetness and creaminess.
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Espresso Powder: Introduce a pinch of espresso powder to amplify the chocolate flavor. It adds a subtle depth that complements the brownies beautifully.
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Raspberry Jam: Swirl in some raspberry jam before baking for a fruity surprise that pairs wonderfully with the chocolate.
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Nutty Crunch: Incorporate chopped nuts like walnuts or pecans for a crunchy texture that contrasts beautifully with the fudgy brownies.
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Dairy-Free Option: Use coconut oil instead of butter and dairy-free chocolate chips to make these brownies vegan-friendly without sacrificing taste.
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Spicy Variation: Add a dash of cayenne pepper for a surprising heat that elevates the chocolate to new heights, creating a unique flavor profile.
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Zesty Twist: A teaspoon of orange or peppermint extract can add a refreshing note that pairs unexpectedly well with the rich chocolate.
For even more ideas on making your treats uniquely yours, you might want to explore delicious recipes like my Chocolate Chip Cookies or Easily Homemade Ice Cream. Enjoy experimenting!
Make Ahead Options
These sourdough discard brownies are perfect for meal prep enthusiasts! You can mix the batter up to 24 hours in advance and store it in the refrigerator to save time on busy weeknights. Simply prepare the batter as instructed, then cover it tightly with plastic wrap or transfer it to an airtight container to prevent any drying out. When you’re ready to bake, pour the batter into your prepared pan and bake as directed. For an even easier option, you can bake the brownies and let them cool, then slice and store them in an airtight container. They’ll stay delicious for up to 4 days at room temperature, making them a fantastic grab-and-go treat!
Expert Tips for Sourdough Discard Brownies
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Mix Gently: Avoid overmixing when combining dry and wet ingredients; this keeps your brownies exceptionally fudgy and tender.
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Check Early: Start checking for doneness a couple of minutes before the suggested baking time to prevent overbaking your sourdough discard brownies.
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Use Quality Cocoa: Choose high-quality unsweetened cocoa powder for a richer chocolate flavor—your taste buds will thank you!
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Don’t Skip the Salt: A pinch of salt is crucial, as it enhances the chocolate and balances the sweetness, making those brownies irresistible.
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Consider Add-ins: Feel free to get creative with mix-ins like nuts or jams to personalize your brownies, enhancing the flavor and texture delightfully.

Sourdough Discard Brownies Recipe FAQs
How do I know if my sourdough discard is good to use?
Absolutely! For best results, ensure that your sourdough discard hasn’t been fed recently, ideally at least 24 hours old. Fresh sourdough might introduce more tangy flavors than desired and affect the texture of your brownies. Look for a bubbly, thick consistency, and avoid any discard that’s overly runny or has dark spots all over.
Can I store leftover brownies, and how long will they last?
Very good question! Store your sourdough discard brownies in an airtight container at room temperature for up to 4 days. If they start to dry out, you might want to wrap them individually with plastic wrap to keep them fresh. You can also put them in the fridge for up to 7 days if you enjoy a firmer texture.
What’s the best way to freeze my brownies?
I often recommend freezing brownies for those moments when you want a quick treat! Wrap each brownie tightly in cling film, then place them in a freezer-safe bag or container. They can last up to 3 months frozen! When you’re ready to indulge, just thaw them in the fridge overnight, or at room temperature on the counter for about an hour.
I’ve accidentally overmixed my brownie batter. What should I do now?
Oh no! Overmixing can cause your brownies to become cakey rather than fudgy. If you find that you’ve overmixed, try to lessen the amount of batter handled and be careful when spreading it in the pan. Bake for a shorter time, keeping an eye on them so you’re not left with a dry outcome. Remember, fudgy brownies thrive on gentle handling!
Are these brownies safe for dogs or people with allergies?
Definitely be cautious! These brownies are not suitable for dogs due to the chocolate content, which is toxic to them. For those with allergies, check the ingredients carefully: you can omit the chocolate chips or substitute them with carob chips for a different flavor. Additionally, use a flax egg if you’re catering to vegans, and gluten-free flour if needed—baking is all about versatility!

Fudgy Sourdough Discard Brownies: Waste Not, Indulge More
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C) and prepare an 8x8 inch baking pan with parchment paper or grease it.
- In a mixing bowl, whisk together melted unsalted butter and granulated sugar until smooth and glossy.
- Add in the sourdough discard, eggs, and vanilla extract, mixing until fully combined.
- Sift in unsweetened cocoa powder, all-purpose flour, and salt, folding gently until just mixed.
- Fold in chocolate chips until evenly distributed.
- Pour the batter into the prepared baking pan and spread evenly.
- Bake for 28-32 minutes or until a toothpick inserted comes out with a few moist crumbs.
- Cool the brownies in the pan for 10-15 minutes before transferring to a wire rack to cool completely.

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