Crackly Top Sourdough Brownies

Name: Crackly Top Sourdough Brownies
Prep time: 20 min
Cook time: 30 min
Total time: 50 min
Yield: 16 brownies
Ingredients: 1 cup unsalted butter; 2 cups granulated sugar; 4 large eggs; 1 teaspoon vanilla extract; 1 cup sourdough starter (active and bubbly); 1 cup all-purpose flour; 1 cup unsweetened cocoa powder; 1/2 teaspoon salt; 1/2 teaspoon baking powder; 1 cup chocolate chips (optional)

Highlighted under: Sweet Baking Collection

I’m excited to share my recipe for Crackly Top Sourdough Brownies, a delightful treat that perfectly balances rich chocolate and a hint of tang from the sourdough. After countless experiments with different ingredients and methods, I finally landed on the right combination to achieve that perfect crackly top. It’s amazing how simple adjustments can transform a classic dessert into something extraordinary. Trust me; once you try these brownies, you’ll never look at traditional brownies the same way again!

Created by

Natalie Evans

Last updated on 2026-01-24T12:35:34.949Z

When developing my Crackly Top Sourdough Brownies, I was intrigued by the idea of using sourdough to add depth to a classic brownie recipe. I started with my favorite chocolate base but experimented with sourdough starter to introduce that unique flavor profile. After several baking sessions, I discovered that letting the batter rest enhanced the crackly crust, resulting in a brownie that is both chewy and beautifully textured.

One important tip is to avoid overmixing the batter once you add the dry ingredients. This will ensure that your brownies remain fudgy on the inside while achieving that gorgeous, crackly top. It’s this contrast of textures that truly makes these brownies stand out, and I can’t wait for you to try them!

Why You'll Love These Brownies
Rich chocolate flavor enhanced by a slight tang from the sourdough
Luxuriously fudgy interior with a delightful crackly top
Perfect for sharing at gatherings or indulging at home

Understanding Your Ingredients

Choosing the right sourdough starter is crucial for these brownies. An active and bubbly starter not only adds a delightful tang but also contributes moisture, which is important for achieving the fudgy interior. If your starter isn't bubbly, you might need to feed it a day or two before baking to ensure it’s at its peak activity level.

The quality of chocolate you use can significantly impact the flavor. I recommend using high-quality cocoa powder and chocolate chips for the richest taste. Look for Dutch-processed cocoa for a deeper chocolate flavor and a smoother texture. If you don’t have chocolate chips on hand, you can chop up a chocolate bar as a substitute.

Perfecting the Technique

When melting the butter, make sure to keep the heat low to avoid scorching. The butter should be fully melted and slightly warm when mixed with sugar; this helps create a smooth batter that bakes evenly. If you see tiny bubbles forming at the edge of the butter but not boiling, that’s the perfect moment to remove it from the heat.

Be cautious when mixing your dry and wet ingredients. Overmixing can lead to dense brownies. Instead, gently fold the flour mixture in until just combined, which will also help create that ideal crackly top. You want to see some flour flecks before fully combining; this ensures the brownies maintain their fudgy texture.

Ingredients

Gather these ingredients to make your delicious brownies.

Brownie Ingredients

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

Ensure all ingredients are at room temperature for best results.

Instructions

Prepare the Base

Preheat your oven to 350°F (175°C) and grease a 9x13 inch baking dish. In a saucepan, melt the butter over low heat and remove from heat once fully melted. Stir in the sugar, then add the eggs one at a time, mixing well after each addition. Finally, add the vanilla extract and sourdough starter.

Mix the Dry Ingredients

In a separate bowl, sift together the flour, cocoa powder, salt, and baking powder. Gradually fold this dry mixture into the wet ingredients until just combined. Be careful not to overmix.

Add Optional Chocolate Chips

If using, gently fold in the chocolate chips for an extra chocolatey experience.

Bake the Brownies

Pour the batter into the prepared baking dish and spread it evenly. Bake in the preheated oven for about 30 minutes or until a toothpick inserted in the center comes out with a few moist crumbs.

Cool and Serve

Allow the brownies to cool in the pan before slicing them into squares. Enjoy the rich flavor and satisfying texture!

For best flavor, let the brownies sit for a few hours before serving.

Pro Tips

For an even more decadent brownie, try swirling in some peanut butter or Nutella before baking to create a marbled effect.

Storage and Freezing

These brownies can be stored at room temperature in an airtight container for up to four days. For longer storage, consider freezing them. Cut the brownies into squares, place them in a single layer in a freezer-safe container, and separate layers with parchment paper. They can last up to three months in the freezer.

To thaw, simply leave them at room temperature for a couple of hours. You can also reheat them in the microwave for about 10-15 seconds if you crave a warm brownie. Pair them with a scoop of vanilla ice cream for an indulgent treat!

Serving Suggestions

These brownies pair exceptionally well with a drizzle of salted caramel or a sprinkle of sea salt on top right before serving. This contrast elevates the flavors and balances the richness of the chocolate, enhancing the overall experience.

For a more adventurous twist, consider adding nuts such as walnuts or pecans for a delightful crunch. Mixing in a tablespoon of espresso powder can also intensify the chocolate flavor without making the brownies taste like coffee.

Questions About Recipes

→ Can I use a different type of chocolate?

Yes, you can substitute dark chocolate or semi-sweet chocolate, depending on your preference.

→ Can I freeze these brownies?

Absolutely! Once cooled, wrap them tightly in plastic wrap and store in the freezer for up to three months.

→ What should I serve with the brownies?

These brownies pair beautifully with vanilla ice cream or a dollop of whipped cream for extra indulgence.

→ How do I store leftovers?

Store any leftover brownies in an airtight container at room temperature for up to a week.