Crackly Top Sourdough Brownies

Name: Crackly Top Sourdough Brownies
Prep time: 20 min
Cook time: 25 min
Total time: 45 min
Yield: 12 brownies
Ingredients: 1 cup unsweetened cocoa powder; 1/2 cup all-purpose flour; 1/2 teaspoon salt; 1 cup sugar; 1/2 cup unsalted butter, melted; 2 large eggs; 1 teaspoon vanilla extract; 1/2 cup sourdough starter, room temperature

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I love how these Crackly Top Sourdough Brownies bring together the rich flavors of chocolate and the unique tang of sourdough. The moment I took my first bite, I was captivated by the glossy top that crackles just right, revealing a fudgy center that practically melts in your mouth. Using sourdough not only adds depth of flavor but also enhances the texture, making these brownies truly memorable. If you're looking for a decadent treat, these brownies will surely satisfy your sweet cravings!

Created by

Seraphina Moore

Last updated on 2026-01-24T13:09:35.140Z

When I first tried making brownies with sourdough, I was amazed at how the sourness balanced the sweetness of the chocolate. The shimmering, crackly top is the attention-grabber, and it’s surprisingly easy to achieve. I discovered that using high-quality cocoa powder really elevates the final flavor, giving it that deep, dark richness.

My favorite part about this recipe is the fudgy center, which remains soft even after cooling. Don’t forget to let them rest before cutting; patience really pays off with these brownies! I recommend serving them with a scoop of vanilla ice cream for an extra indulgent treat.

        Why You'll Love These Brownies
        Rich chocolate flavor with a hint of sourdough tang
Glossy, crackly top that adds visual appeal
Fudgy texture that satisfies chocolate cravings

      

Understanding Sourdough in Brownies

Using sourdough starter in brownies adds a unique flavor profile that elevates the overall taste. The natural fermentation process of sourdough introduces a subtle tanginess that beautifully complements the richness of the cocoa. This addition not only enriches the flavor but also contributes to the brownies' moisture, ensuring they remain fudgy rather than dry. It's important to use an active, bubbly starter; otherwise, you may not achieve the desired texture and rise.

Another significant role of sourdough in this recipe is its impact on texture. The acids in the sourdough react with the other ingredients during baking, leading to a glossy, crackly top that signals perfectly baked brownies. This texture is a telltale sign of successful brownies and is a result of careful mixing and baking at the right temperature. If your brownies don't develop that gorgeous top, you might want to check your mixing technique or adjust the baking time.

Tips for Perfecting the Bake

To achieve the best results, pay close attention to the mixing process. Combine the dry and wet ingredients until just combined, as overmixing can lead to dense brownies. Opt for a rubber spatula for folding; it helps prevent overmixing while ensuring a smooth batter. As you stir, look for that shiny, cohesive mixture—this indicates that your brownies will rise beautifully during baking.

When it's time to bake, ensure your oven is preheated accurately. An oven thermometer can be a handy tool if you suspect your oven's temperature is off. Bake the brownies until the top is glossy and crackly, typically around 20-25 minutes. Keep an eye on them, as baking times can vary based on the oven and the pan used. For a true test of doneness, a toothpick inserted into the center should come out with a few moist crumbs, rather than completely clean.

Ingredients

Gather your ingredients before starting to ensure a smooth baking experience.

For the Brownies

1 cup unsweetened cocoa powder
1/2 cup all-purpose flour
1/2 teaspoon salt
1 cup sugar
1/2 cup unsalted butter, melted
2 large eggs
1 teaspoon vanilla extract
1/2 cup sourdough starter, room temperature

Make sure all ingredients are at room temperature for the best results.

Instructions

Preheat your oven and prepare a baking pan before you begin mixing the batter.

Preheat the Oven

Preheat your oven to 350°F (175°C) and grease a 9x9-inch baking pan.

Mix Dry Ingredients

In a medium bowl, whisk together cocoa powder, flour, and salt until fully combined.

Combine Wet Ingredients

In a large bowl, mix the melted butter and sugar until well combined. Add eggs, vanilla, and sourdough starter, mixing until smooth.

Combine Mixtures

Gradually add the dry mixture to the wet mixture, stirring until just combined—do not overmix.

Bake

Pour the batter into the prepared pan and bake for 20-25 minutes, or until the top is shiny and crackly.

Cool and Serve

Let the brownies cool in the pan for at least 15 minutes before cutting into squares. Enjoy!

For best presentation, serve with a sprinkle of powdered sugar.

Pro Tips

For an extra touch, add chocolate chips or nuts to the batter before baking.

Storing and Freezing

These Crackly Top Sourdough Brownies store exceptionally well. Once cooled, keep them in an airtight container at room temperature for up to three days. For longer storage, consider cutting them into individual squares and freezing them. Place parchment paper between the layers to prevent sticking, and store them in a freezer-safe container. They can be kept frozen for up to three months, allowing you to enjoy a delightful chocolate fix anytime.

When you’re ready to enjoy your frozen brownies, simply remove them from the freezer and let them sit at room temperature for about 30 minutes. If you're in a hurry, you can microwave them for about 10-15 seconds for an almost fresh-baked experience. Just be cautious to avoid overheating, which can cause them to dry out.

Serving Suggestions

These brownies are delicious on their own, but pairing them with a scoop of vanilla ice cream can take your dessert to the next level. The cold creaminess contrasts beautifully with the rich, fudgy texture of the brownies. You could even drizzle them with caramel or chocolate sauce for added indulgence, which accentuates the brownie’s crackly top and enhances the chocolate flavor.

For those looking to add a little extra flair, consider sprinkling some flaky sea salt on top before serving. This touch enhances the chocolate flavor and provides a delightful crunch. Additionally, variations like adding chopped nuts or chocolate chips into the batter before baking can create an interesting texture and flavor contrast, making each bite a unique experience.

Questions About Recipes

→ Can I use a different type of flour?

Yes, you can experiment with gluten-free flour, but the texture may vary.

→ How do I store leftover brownies?

Store in an airtight container at room temperature for up to 3 days.

→ Can I freeze these brownies?

Absolutely! Wrap them individually in plastic wrap and store in a freezer bag for up to 3 months.

→ What can I substitute for sourdough starter?

You can use yogurt or applesauce for a similar texture, although the flavor will change.