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Dark Fudgy Sourdough Brownies

4.98 from 42 votes

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These luscious dark chocolate sourdough brownies are the perfect snack when you need some melt in your mouth chocolatiness! Bonus: use some of your discard starter!

sourdough dark fudgy brownies.

If you like a dark, fudgy brownie then this recipe is for you!

These Dark Chocolate Sourdough Brownies are moist and dense and chock full of pecans. 

Perfect for the dark chocolate lover in your life! And it’s one of our favorite sourdough discard recipes. 

Don’t have a starter yet? Learn how to make your own sourdough starter here.

Wins all round!

Need another win? This sourdough discard brownies recipe freezes beautifully. 

Assuming any make it to the freezer…they typically don’t around here. 

So, if you need to make these ahead for a special occasion that’s no problem. 

OK, ready to get going on these?

Dark Chocolate Sourdough Brownies


  • 4 oz unsweetened baking chocolate
  • 1 stick + 2 Tablespoons unsalted butter (10 Tablespoons)
  • 1 cup white sugar
  • ½ cup brown sugar, packed
  • ½ teaspoon sea salt
  • ½ cup unsweetened cocoa powder
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • ½ cup sourdough starter (unfed)
  • ½ cup chopped pecans


No need for a stand mixer! These are super simple to whip up by hand.

Preheat your oven to 350℉. 

Butter or grease an 8”x8” or 9”x9” pan or baking dish. 

Toss the chocolate and butter into a medium sized saucepan. Heat that on medium until the chocolate is melted. Whisk it together as it’s melting.

butter and chocolate in saucepan.
what a great way to start a recipe!

When the butter and chocolate are thoroughly melted, add white sugar, brown sugar, salt, and cocoa powder to the chocolate mixture and mix until there’s no lumps. 

Add the eggs, vanilla, and sourdough starter.  

adding sourdough starter to brownie batter in saucepan.
now add the secret ingredient

Beat the batter to make sure everything is well incorporated.

And now, the best part, stir in those lovely nubs of pecan deliciousness. 

adding pecans to brownie batter.
pecans just make everything better

Pour the brownie batter into the prepared pan. Use a spoon or spatula and smooth the top. 

Bake the sourdough brownies for 45-55 minutes. They are done when they pull away from the sides and a toothpick inserted in the center comes out clean. 

baked brownies in pan on cooling rack.
it’s pulled away from the sides so it’s done!

Cool in the pan on a wire rack for about 20 minutes before cutting. If you can…

I usually can’t. And I eat one right after they are cool enough to eat. Sometimes before they’re cool enough to eat…

This recipe makes 16 brownies of a reasonable size. Or 9 ginormous ones. No judgment here! 

This is probably the simplest sourdough brownies recipe you’ll ever find. Fast, easy, and delicious! My favorite kind of recipe.

You should add it to your snack rotation. Your kids will love you for it!

Frequently Asked Questions About Sourdough Brownies

How long will these sourdough brownies last?

These brownies will stay good for about 3 to 5 days on the counter. After that they start to dry out a little.

Can you freeze sourdough brownies?

Yes you can. Wrap tightly with plastic wrap. Then put them into a zip top freezer bag and toss them in the freezer. They should stay good in there for about 3 to 5 months. De-frost on the counter top.

What can you substitute for the pecans?

You can substitute any other nut of your choice. Or you can use 1/2 cup of chocolate chips, mint chocolate chips, or even espresso chips.

More dessert recipes you will love:

Sourdough brownies on white plate.

Dark Chocolate Sourdough Brownies

These luscious dark chocolate sourdough brownies are the perfect snack when you need some melt in your mouth chocolatiness! Bonus: use some of your discard starter!
4.98 from 42 votes
Prep Time 5 minutes
Cook Time 45 minutes
Total Time 50 minutes
Course Snack, Dessert
Cuisine American
Servings 16 brownies
Calories 216 kcal


  • 4 oz unsweetened baking chocolate
  • 1 stick + 2 Tablespoons unsalted butter
  • 1 cup white sugar
  • ½ cup brown sugar packed
  • ½ teaspoon sea salt
  • ½ cup unsweetened cocoa powder
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • ½ cup sourdough starter
  • ½ cup chopped pecans


  • Preheat oven to 350℉. Butter or grease 8”x8” or 9”x9” pan or baking dish.
  • Melt chocolate and butter in a medium saucepan. Whisk together.
  • When the butter and chocolate are thoroughly melted, add white sugar, brown sugar, salt, and cocoa powder to the chocolate mixture and mix until there’s no lumps.
  • Add eggs, vanilla, and sourdough starter. Beat well.
  • Stir in pecans.
  • Pour brownie batter into the prepared pan. Smooth top. Bake for 45-55 minutes.
  • It’s done when it’s pulled away from the sides and the toothpick inserted in the center comes out clean.
  • Cool on rack for 20 minutes before cutting. Recipe makes 16 brownies.


Serving: 1brownieCalories: 216kcalCarbohydrates: 24gProtein: 3gFat: 14gSaturated Fat: 7gPolyunsaturated Fat: 1gMonounsaturated Fat: 5gTrans Fat: 0.3gCholesterol: 39mgSodium: 659mgPotassium: 133mgFiber: 3gSugar: 7gVitamin A: 250IUVitamin C: 0.04mgCalcium: 24mgIron: 2mg
Keyword sourdough brownies, sourdough discard recipe
Tried this recipe?Let us know how it was!
By on October 23rd, 2022

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