Decadent Sourdough Discard Chocolate Brownies

These Sourdough Discard Brownies are the fudgiest brownies you’ll ever taste — a delicious way to use up extra sourdough starter. With deep chocolate flavor and a crackly top, they’re a must for any chocolate lover.

Whether you’re comfortable with sourdough or just want an easy, indulgent brownie recipe, these homemade sourdough discard brownies strike the perfect balance of sweetness and deep cocoa. They’re simple to make and so good you may want to double the batch.

Recipe Ingredients

You’ll need the following ingredients for this easy sourdough discard brownie recipe:

• 1 cup butter, melted
• 2 cups granulated sugar
• 3 large eggs
• 2 teaspoons vanilla extract
• 3/4 cup sourdough discard (room temperature)
• 1 1/4 cups unsweetened cocoa powder
• 1 1/4 cups all-purpose flour
• 1/2 teaspoon salt
• 1 cup semi-sweet chocolate chips

Ingredient Notes

• Sourdough discard: Adds a subtle tang and extra depth — a great way to use excess starter.
• Semi-sweet chocolate chips: Folded into the batter they deepen the chocolate flavor and add chewiness.
• Cocoa powder: Use unsweetened for rich chocolate notes and to help create the signature crackly top.

How to Make Sourdough Discard Brownies — Step by Step

Step 1: Preheat oven to 350°F (175°C). Line a 9×9-inch baking pan with parchment paper, leaving an overhang for easy removal, or lightly grease the pan.

Step 2: In a large bowl, whisk the melted butter and granulated sugar until well combined.

Step 3: Add the eggs one at a time, whisking thoroughly after each addition.

Step 4: Whisk in the vanilla extract and the room-temperature sourdough discard until smooth.

Step 5: In a separate bowl, sift together the unsweetened cocoa powder, all-purpose flour, and salt.

Step 6: Fold the dry ingredients into the wet ingredients until just combined — don’t overmix.

Step 7: Gently fold in the semi-sweet chocolate chips.

Step 8: Pour the batter into the prepared pan and spread it evenly.

Step 9: Bake for 45–50 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs. Start checking at 45 minutes to avoid overbaking.

Step 10: Allow the brownies to cool completely in the pan. Use the parchment overhang to lift them out, then cut into squares and serve.

Pro Tip

For a more pronounced sourdough flavor and slightly more tender brownies, let the batter rest for 20–30 minutes before baking. This hydrates the flour and lets the discard’s flavor develop.

Storage and Reheating

Storage: Store leftover brownies in an airtight container at room temperature for 3–4 days.

Reheating: Warm individual brownies in the microwave for 10–15 seconds to restore a gooey texture.

Freezing: Wrap brownies individually and place in a freezer-safe bag for up to 3 months. Thaw at room temperature before serving.

Additions & Substitutions

Additions:

• Nuts: Stir in chopped walnuts or pecans for crunch.
• Espresso powder: A small amount enhances the chocolate depth without adding coffee flavor.

Substitutions:

• Butter: Swap some or all of the melted butter for melted dark chocolate for an even richer texture.
• Dutch-process cocoa: Use in place of natural cocoa for a smoother, less acidic chocolate flavor.

Frequently Asked Questions

What to Serve with These Fudge Brownies

These rich brownies pair beautifully with a scoop of vanilla ice cream, a drizzle of maple syrup or caramel, or simply a cold glass of milk.

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