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Sourdough Discard Brownies (Chocolate Chip Fudgy Brownies)

Two stacked sourdough brownies with a crackly top and fudgy chocolate center on parchment paper in a home kitchen.

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These sourdough discard brownies are rich, chewy, and deeply chocolatey with a shiny crackly top and plenty of chocolate chips throughout. A perfect way to use extra sourdough discard for an easy homemade dessert.

Ingredients

  • ½ cup cocoa powder
  • 8 TBSP cup salted butter (you can use unsalted, but add an extra ½ tsp salt)
  • 1 ¾ cup semi-sweet chocolate chips +  ¼–½ cup semi-sweet or dark chocolate chips for folding in
  • 2 whole eggs + 1 egg yolk
  • ¾ cup granulated sugar
  • ¾ cup brown sugar
  • 1 TBSP vanilla extract
  • ½ cup sourdough discard
  • 1 cup all-purpose flour + 1 TBSP all-purpose flour
  • ¼ tsp salt

Instructions

  1. Preheat oven to 350°F. Line a 9×9 baking pan with parchment paper, leaving overhang for easy removal.
  2. In a medium saucepan, or microwave safe bowl, slowly melt the butter and 1 3/4 cup semi sweet chocolate chips, vanilla, and cocoa powder until thick, smooth and glossy. Remove from heat and set aside.
  3. In the bowl of a stand mixer or large mixing bowl, beat the eggs, egg yolk, granulated sugar, and brown sugar for 5-7 minutes until the mixture becomes lighter in color and slightly thickened.
  4. Add the melted chocolate mixture and sourdough discard. Mix until smooth and fully combined.
  5. Add the flour and salt. Mix just until the batter comes together. This will be thick
  6. Fold in ¼–½ cup chocolate chips with a spatula.
  7. Spread the batter evenly into the prepared pan.
  8. Bake for 31–33 minutes, or until the edges are set and a toothpick inserted in the center shows moist crumbs.
  9. Allow brownies to cool completely before lifting from the pan and slicing.

Notes

The extra tablespoon of flour helps shift the texture slightly from very fudgy, toward slightly chewy.

Whisking cocoa powder into the warm melted chocolate deepens the chocolate flavor and creates a smoother batter.

Let brownies cool completely before slicing for clean edges.

Pan Note
For an 11×7 pan, bake about 35 minutes since the batter layer will be slightly thicker.