Optional add-ins: chocolate chipschopped 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