Chewy Brownies Using Sourdough Starter

Name: Chewy Brownies Using Sourdough Starter
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Yield: 16 servings
Ingredients: 1 cup unsalted butter; 2 cups granulated sugar; 4 large eggs; 1 cup active sourdough starter; 1 teaspoon vanilla extract; 1 cup all-purpose flour; 1 cup unsweetened cocoa powder; 1/2 teaspoon salt; 1 cup chocolate chips (optional)

Highlighted under: Oven-Kissed Treats

I absolutely love baking with sourdough starter because it adds this incredible depth of flavor to baked goods. When I experimented with making chewy brownies, I was thrilled to discover how the tangy notes of the starter paired beautifully with rich chocolate. This recipe is not only a great way to use up leftover starter, but it also results in brownies that are perfectly fudgy and chewy. You can serve them plain or dress them up with nuts or a dusting of powdered sugar!

Created by

Lillian Hayes

Last updated on 2026-02-15T05:37:37.015Z

When I first thought about incorporating sourdough into brownies, I wasn't sure how the flavors would meld. However, I was curious and decided to give it a shot. The result was surprisingly delicious! The sourdough adds a subtle complexity that elevates the usual chocolate flavor profile. My family couldn’t tell I used sourdough until I told them!

One tip I found helpful was to let the brownies cool completely before cutting them. This ensures they maintain their chewy texture and don’t crumble apart. Trust me—waiting is worth it for that perfect bite! I can’t wait for you to try this recipe; it’s sure to impress!

Why You'll Love These Brownies
Unique flavor from the sourdough starter adds depth.
Perfectly chewy texture that keeps you coming back for more.
A creative way to use up leftover sourdough that everyone will enjoy.

Understanding Sourdough in Baking

Using sourdough starter in brownies might seem unconventional, but it plays a crucial role in achieving a unique taste and texture. The natural acidity of the sourdough reacts with the cocoa powder, resulting in a more complex flavor profile. Additionally, it contributes to the overall moisture content, ensuring your brownies stay chewy rather than becoming dry. Understanding this dynamic will help you appreciate why using active sourdough is key in this recipe.

Make sure your sourdough starter is at its peak activity when baking. This not only enhances the flavor but also ensures that your brownies rise and achieve the right texture. An active starter is one that has been recently fed and bubbly—this is when it’s at its best for adding lift and tang to your baked goods.

Perfecting Your Brownies

To achieve the ideal chewy texture, it’s essential not to overmix your brownie batter once you add the dry ingredients. Overmixing can lead to a tougher brownie, which isn’t what we want. Instead, fold the flour mixture gently until just combined; a few streaks of flour are okay. This technique helps maintain a soft and fudgy interior while still giving you that chewy bite.

When baking, keep an eye on the edges of your brownies. You want to see them pulling away slightly from the sides of the pan, while the center remains slightly underbaked. It’s essential to remove them from the oven when a toothpick inserted into the center comes out with a few moist crumbs rather than a clean pick—this means you’ll achieve that perfect chewiness.

Ingredients

Gather these ingredients before you start!

Ingredients

1 cup unsalted butter
2 cups granulated sugar
4 large eggs
1 cup active sourdough starter
1 teaspoon vanilla extract
1 cup all-purpose flour
1 cup unsweetened cocoa powder
1/2 teaspoon salt
1 cup chocolate chips (optional)

Ensure all your ingredients are at room temperature for the best results.

Instructions

Follow these steps carefully for delicious brownies!

Preheat Oven

Preheat your oven to 350°F (175°C) and grease a 9x13 inch baking pan.

Melt Butter

In a medium saucepan, melt the butter over low heat. Remove from heat and stir in the sugar until well combined.

Mix Wet Ingredients

Add the eggs one at a time, mixing well after each addition. Stir in the sourdough starter and vanilla extract until smooth.

Combine Dry Ingredients

In a separate bowl, whisk together the flour, cocoa powder, and salt. Gradually add the dry ingredients to the wet mixture until just combined.

Add Chocolate Chips

Fold in the chocolate chips, if using.

Bake Brownies

Pour the batter into the prepared baking pan and spread evenly. Bake for 25-30 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs.

Cool and Serve

Let the brownies cool in the pan before cutting them into squares. Enjoy!

Don’t forget to share your delicious creation with family and friends!

Pro Tips

Adding a pinch of espresso powder can enhance the chocolate flavor even further.

Ingredient Substitutions

If you don’t have unsalted butter on hand, you can substitute with an equal amount of salted butter. Just reduce the additional salt in the recipe to balance the flavors. For a dairy-free version, consider using coconut oil or a vegan butter substitute, both of which will keep your brownies moist without sacrificing texture.

For those looking for a gluten-free option, you can replace all-purpose flour with a gluten-free flour blend. Make sure the blend includes xanthan gum to help create structure. This adaptation will still yield deliciously chewy brownies, accommodating a variety of dietary preferences.

Storage and Serving Suggestions

Once cooled, store your brownies in an airtight container at room temperature for up to four days. They can also be refrigerated to maintain freshness longer, up to a week. For an extra treat, try warming them slightly in the microwave before serving—this brings out the fudginess and makes the chocolate chips gooey once again.

Feel free to get creative with your toppings! A sprinkle of flaky sea salt can enhance the flavors beautifully. You could also add a dollop of whipped cream or a scoop of ice cream on the side for an indulgent dessert experience. Alternatively, consider drizzling melted chocolate or caramel on top for a decadent finishing touch.

Questions About Recipes

→ Can I use discard sourdough starter for this recipe?

Yes, using discard sourdough starter gives the brownies their chewy texture and unique flavor.

→ How do I know when the brownies are done baking?

The brownies are done when a toothpick inserted into the center comes out with a few moist crumbs. Be careful not to overbake!

→ Can I use other types of chocolate in this recipe?

Absolutely! You can use dark chocolate, white chocolate, or even flavored chocolate. Just adjust the sweetness if necessary.

→ How should I store leftover brownies?

Store leftover brownies in an airtight container at room temperature for up to 3 days, or refrigerate them for longer freshness.