Fudgy Sourdough Discard Brownies

Featured in Sweet Treats for Every Occasion.

These Sourdough Discard Brownies transform leftover starter into something truly special. The combination of Dutch cocoa powder and melted chocolate chips creates an intensely chocolatey base, while the sourdough discard adds depth and helps create that perfect chewy texture. A low, slow bake gives these brownies their signature crackly top and fudgy center. The result is thick, rich brownies that are leagues better than any box mix. They're the perfect way to use up that extra sourdough discard while making an impressive dessert.
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Updated on Sat, 22 Feb 2025 16:54:37 GMT
A square of chocolate cake with a cup of coffee next to it. Pin it
A square of chocolate cake with a cup of coffee next to it. | tastygusto.com

These sourdough discard brownies transform basic pantry ingredients into an irresistible chocolate masterpiece. The addition of tangy sourdough discard creates an incredibly complex flavor profile while contributing to that perfectly chewy texture. Every bite delivers intense chocolate richness balanced by subtle fermented notes that make these brownies uniquely addictive.

The first time I experimented with adding sourdough discard to brownies, I was amazed at how it enhanced both texture and flavor. That slight tanginess perfectly complements the rich chocolate, creating something even better than traditional brownies.

Essential Ingredients

  • Unsalted butter: Provides richness and helps create that coveted crackly top. European-style butter with higher fat content yields even richer results.
  • Granulated sugar: Contributes both sweetness and structure. Proper whisking with melted butter creates that signature glossy crust.
  • Extra egg yolk: Increases fudginess and richness while promoting that perfect chewy texture.
  • Sourdough discard: Adds complexity and creates an incredibly tender crumb. Room temperature discard incorporates more smoothly.
  • Dutch-processed cocoa powder: Delivers deeper chocolate flavor and darker color. Its alkaline nature creates better texture.
  • Baking powder: Provides just enough lift while maintaining density.
  • Kosher salt: Enhances chocolate flavor and balances sweetness. The larger crystals distribute more evenly.
  • Pure vanilla extract: Rounds out the flavor profile and enhances chocolate notes.
  • Strong coffee: Intensifies chocolate flavor without adding coffee taste.
  • Semi-sweet chocolate chips: Melt into pockets of intense chocolate and contribute to fudgy texture.
  • All-purpose flour: Provides structure while allowing richness to shine.

Crafting Perfect Brownies

Preparation Phase:
Begin by positioning your oven rack in the middle position for even heat distribution. Line your pan with parchment paper, leaving overhang for easy removal. The aluminum pan conducts heat perfectly for crispy edges and fudgy centers.
Creating Your Base:
Melt butter slowly over medium-low heat to prevent scorching. When adding sugar, whisk thoroughly to dissolve crystals and create that coveted glossy top. This step requires patience—proper sugar dissolution is crucial for texture.
Mastering The Mixture:
Incorporate eggs one at a time, whisking until each is fully blended. This gradual addition creates an emulsion that contributes to proper structure. When adding sourdough discard, fold gently to maintain air bubbles while ensuring even distribution throughout the batter.
A tray of brownies with chocolate frosting. Pin it
A tray of brownies with chocolate frosting. | tastygusto.com

During recipe development, I discovered that letting the melted butter and sugar mixture cool slightly before adding eggs prevents premature cooking and creates better texture. This small detail makes a remarkable difference in the final result.

Perfecting The Bake

Final Baking Process:
Watch your brownies carefully during the final 15 minutes of baking. The surface should be set and slightly crackled, while a toothpick inserted near the center should come out with a few moist crumbs. If the top begins browning too quickly, tent with foil to prevent burning while the center continues baking.
Achieving Ideal Texture:
Understanding baking indicators ensures perfect results every time. Look for edges that have pulled slightly away from the pan and a top that's set but still slightly soft when gently pressed. The center should feel set but retain some give when touched.

Serving Suggestions

Present these brownies slightly warm for maximum fudginess, or at room temperature for cleaner cuts. Consider serving with vanilla ice cream, fresh berries, or a drizzle of salted caramel sauce for special occasions.

Creative Variations

Take your recipe to the next level by mixing in toasted nuts for crunch, a dash of mint extract for freshness, or rich peanut butter swirls for depth. For a decadent touch, layer it with smooth cream cheese frosting or glossy ganache. To balance the sweetness, finish with a sprinkle of flaky sea salt before baking, creating an irresistible contrast of flavors.

Storage Solutions

Keep brownies fresh by storing them in layers separated by parchment paper. If freezing, wrap individual portions to prevent freezer burn and allow for easy thawing. Let frozen brownies thaw at room temperature for the best texture.

A pan of chocolate brownies on a table. Pin it
A pan of chocolate brownies on a table. | tastygusto.com

These Sourdough Discard Brownies represent the perfect marriage between traditional baking and sourdough innovation. Each batch brings together rich chocolate decadence with subtle fermented complexity, creating something truly special. Whether served at casual gatherings or elegant dinner parties, these brownies never fail to impress. The recipe proves that sometimes the best creations come from finding new uses for traditional ingredients.

Frequently Asked Questions

→ Why use an aluminum pan for these brownies?
Aluminum pans conduct heat evenly, ensuring the brownies cook through properly without burning the edges or leaving the middle raw.
→ Does the sourdough discard need to be fresh?
No, you can use discard straight from the fridge. Just make sure it isn't overly sour or has any off smells.
→ Why do they take so long to bake?
The low, slow bake helps develop that crackly top and ensures the center stays fudgy while cooking through completely.
→ Can I skip the coffee?
Yes, the coffee is optional. It enhances the chocolate flavor but the brownies are still delicious without it.
→ How do I know when they're done?
A toothpick inserted in the center should come out clean. The top will be set and crackly but the center should still feel slightly soft.

Fudgy Sourdough Discard Brownies

These thick and fudgy Sourdough Discard Brownies have a perfectly flaky top and rich chocolate flavor, making great use of leftover starter.

Prep Time
15 Minutes
Cook Time
75 Minutes
Total Time
90 Minutes

Category: Desserts & Sweets

Difficulty: Intermediate

Cuisine: American

Yield: 16 Servings (16 brownies)

Dietary: Vegetarian

Ingredients

→ Wet Ingredients

01 1 cup (227 grams) unsalted butter
02 2 large eggs
03 2 large egg yolks
04 1/2 cup (100 grams) sourdough starter discard
05 1 tablespoon vanilla extract
06 1 tablespoon brewed coffee (optional)

→ Dry Ingredients

07 2 1/3 cups (450 grams) granulated sugar
08 1 cup (106 grams) Dutch-processed cocoa powder
09 1 teaspoon baking powder
10 1 teaspoon kosher salt
11 1 cup plus 1 tablespoon (130 grams) all-purpose flour

→ Mix-ins

12 2 cups (360 grams) semi-sweet chocolate chips

Instructions

Step 01

Heat your oven to 350°F with the rack in the middle. Butter an 8-inch aluminum pan and line it with parchment paper. The aluminum pan is key for even baking.

Step 02

Melt your butter in a medium saucepan over medium-low heat. Whisk in the sugar until it gets nice and shiny (about 2-3 minutes), then take it off the heat.

Step 03

Whisk in eggs and yolks one at a time until smooth. Add cocoa, sourdough discard, vanilla, coffee if using, baking powder, and salt. Mix until well combined.

Step 04

Fold in those chocolate chips until they're mostly melted, then gently fold in the flour just until everything comes together.

Step 05

Pour your batter into the pan and spread it evenly. Bake for 60-75 minutes until a toothpick comes out clean. If the top starts getting too dark, cover loosely with foil.

Step 06

Let the brownies cool in the pan for an hour, then move to a wire rack to finish cooling. Once completely cool, cut into 16 squares.

Notes

  1. Using a food scale gives you the most accurate measurements for perfect brownies every time.
  2. These brownies stay fresh in an airtight container for 5 days, or freeze them for up to 3 months.
  3. If you're using a bigger pan, they'll need less time in the oven.

Tools You'll Need

  • 8-inch aluminum square pan
  • 4-quart saucepan
  • Food scale
  • Parchment paper
  • Wire cooling rack

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains dairy (butter)
  • Contains eggs
  • Contains wheat (flour)

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 393
  • Total Fat: 20 g
  • Total Carbohydrate: 54 g
  • Protein: 5 g