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Rich & Fudgy Sourdough Brownies, A cozy, old-fashioned chocolate treat made with sourdough discard

Rich and fudgy sourdough brownies made with sourdough discard. An easy, rustic chocolate dessert recipe perfect for cozy homemade baking.
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Course: Dessert
Keyword: brownies with sourdough discard, easy sourdough brownie recipe, fudgy sourdough brownies, homemade sourdough brownies, old fashioned brownies, rustic brownie recipe, sourdough brownie recipe, sourdough brownies, sourdough chocolate brownies, sourdough discard brownies, sourdough discard dessert
Prep Time: 15 minutes
Cook Time: 30 minutes
Cooling Time: 30 minutes
Total Time: 1 hour 15 minutes
Servings: 12 brownies
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Equipment

Ingredients

  • ½ cup butter melted
  • 1 cup cane sugar
  • ½ cup brown sugar
  • 2 eggs
  • ½ cup sourdough discard unfed or active
  • 1 teaspoon vanilla extract
  • ¾ cup all-purpose flour
  • ½ cup cocoa powder
  • ½ teaspoon salt
  • ½ teaspoon baking powder
  • Optional add-ins: chocolate chips chopped walnuts, or flaky sea salt for topping.

Instructions

Mix the Wet Ingredients

  • Preheat oven to 350°F (175°C). In a large bowl, whisk together melted butter, cane sugar, and brown sugar until smooth. Add eggs, sourdough discard, and vanilla extract, mixing until fully combined.

Combine the Dry Ingredients

  • In a separate bowl, whisk together flour, cocoa powder, salt, and baking powder.

Make the Batter

  • Gradually fold the dry ingredients into the wet mixture just until combined. Avoid overmixing to keep the brownies tender and fudgy.

Bake

  • Pour batter into a greased or parchment-lined 8×8 baking dish. Smooth the top and sprinkle with chocolate chips or nuts if using.
  • Bake for 25–30 minutes, until the center is just set and a toothpick comes out with moist crumbs.

Cool and Slice

  • Allow brownies to cool completely before slicing for clean edges and best texture.

Notes

Tips for Perfect Sourdough Brownies

  • For fudgier brownies: bake closer to 25 minutes
  • For cakier brownies: bake closer to 30 minutes
  • For deeper flavor: refrigerate batter overnight before baking
  • For clean cuts: chill brownies slightly before slicing
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