Crispy Edge Sourdough Brownies

Name: Crispy Edge Sourdough Brownies
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Yield: 16 brownies
Ingredients: 1 cup unsalted butter, melted; 1 cup granulated sugar; 1 cup packed brown sugar; 4 large eggs; 1 teaspoon vanilla extract; 1 cup all-purpose flour; 2/3 cup unsweetened cocoa powder; 1/2 teaspoon baking powder; 1/2 teaspoon salt; 1 cup sourdough discard

Highlighted under: Simple Baking Favorites

I've always had a love for brownies, but when I discovered how to incorporate sourdough into the mix, it changed everything. The tangy depth of flavor elevates these brownies to a whole new level, while the crispy edges provide a satisfying crunch. Each bite offers a beautiful contrast of textures, making it impossible to resist going back for more. I love how this recipe takes just a few steps and minimal ingredients, yet delivers gourmet results that impress. Perfect for sharing—or keeping all to myself!

Created by

Pippa Lawson

Last updated on 2026-01-24T11:21:35.062Z

When I first tried adding sourdough discard to brownies, I was skeptical. Would the flavor work? Soon, I discovered it not only added a delightful tang, but also moisture that kept the brownies fudgy. I learned that incorporating the discard also helped me reduce waste in my kitchen, making this recipe eco-friendly and delicious!

Another game changer was baking them in a pan lined with parchment paper. I found that this not only made for easy removal but also contributed to those coveted crispy edges that just melt in your mouth. It’s a detail worth it, and my family can never get enough of these brownies!

Why You Will Love This Recipe
Tangy depth of flavor from sourdough discard
Crispy edges that contrast beautifully with a fudgy center
Easy to make with minimal ingredients for delicious results

The Role of Sourdough Discard

Incorporating sourdough discard into these brownies not only reduces waste but also infuses them with a unique tanginess that enhances the chocolate flavor. This sourdough gives the brownies a moist texture that makes them fudgy while keeping them from becoming overly sweet. The fermentation process of sourdough adds a depth that complements the cocoa, making every bite a delightful experience that you won’t find in traditional brownies.

When using sourdough discard, it’s important to ensure it is at room temperature for the best incorporation. Cold discard can cause the batter to seize up, affecting the final product. If you’re unsure about the freshness of your discard, a quick sniff can tell you if it’s still active; a mildly tangy aroma is a good sign. If it smells off, it's better to use a fresh batch.

Achieving the Perfect Texture

The key to achieving those perfectly crispy edges with a fudgy center lies in the baking time. Bake the brownies for no more than 30 minutes to prevent them from drying out. The traditional toothpick test works here, but be vigilant: for fudgy brownies, you want moist crumbs clinging to the toothpick rather than a clean pull. If you wait too long, you'll end up with dry brownies instead of a rich, chewy consistency.

Another tip is to let the brownies cool in the pan before transferring them to a wire rack. This allows the edges to set while the center remains soft, creating that desired texture contrast. I often leave them to cool for about 10 minutes in the pan, which is just enough time for them to firm up without losing the gooeyness.

Ingredients

For the Brownies

1 cup unsalted butter, melted
1 cup granulated sugar
1 cup packed brown sugar
4 large eggs
1 teaspoon vanilla extract
1 cup all-purpose flour
2/3 cup unsweetened cocoa powder
1/2 teaspoon baking powder
1/2 teaspoon salt
1 cup sourdough discard

Notes:

Use your favorite chocolate chips for added decadence!

Instructions

Preheat the Oven

Preheat your oven to 350°F (175°C) and grease a 9x13-inch baking pan or line it with parchment paper.

Mix Wet Ingredients

In a large bowl, combine melted butter, granulated sugar, and brown sugar. Whisk until smooth. Add the eggs one at a time, incorporating each fully before the next, then mix in the vanilla extract and sourdough discard.

Combine Dry Ingredients

In another bowl, sift together the flour, cocoa powder, baking powder, and salt.

Combine Mixtures

Gradually add the dry ingredients to the wet ingredients, stirring until just combined. Avoid overmixing.

Bake

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

Cool and Serve

Allow the brownies to cool in the pan for 10 minutes before transferring to a wire rack. Once cool, cut into squares and enjoy!

Enjoy your crispy edge brownies!

Pro Tips

Make sure to use room temperature eggs for better incorporation into the batter. Also, let the brownies cool completely to achieve the perfect texture.

Storing and Freezing Brownies

These brownies are best enjoyed fresh but can be stored in an airtight container for up to a week at room temperature. To maintain their fudgy texture, consider placing a piece of wax paper between layers to prevent them from sticking together. If you want to save some for later, they can be frozen for up to three months. Simply wrap them tightly in plastic wrap before placing them in a freezer bag to avoid freezer burn.

When you're ready to enjoy your frozen brownies, let them thaw in the fridge overnight or at room temperature for about an hour before serving. If you prefer them warm, you can place them in the microwave for about 10-15 seconds to achieve that fresh-baked warmth.

Serving Suggestions

These brownies are delicious as-is, but you can elevate your dessert experience with some creative serving options. Consider topping them with a scoop of vanilla ice cream, a drizzle of salted caramel, or even a dusting of powdered sugar to enhance presentation. Fresh berries also make a great topping, adding a pop of color and a refreshing contrast to the rich chocolate flavor.

For a seasonal touch, try adding a sprinkle of chopped nuts or a dash of peppermint extract for a festive twist. When serving at gatherings or events,cut the brownies into varying sizes—smaller squares allow guests to enjoy them as a bite-sized treat without overindulging!

Questions About Recipes

→ Can I use a different type of flour?

Yes, you can substitute with gluten-free flour, but it may alter the texture slightly.

→ What can I do with leftover sourdough discard?

You can use it in pancakes, bread, or even pizza dough!

→ How should I store the brownies?

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

→ Can I freeze these brownies?

Absolutely! Wrap them well and store in a freezer-safe container for up to 3 months. Thaw before serving.