Sourdough Brownie Cookies (Printable)

Rich fudgy cookies with crackly tops and tangy sourdough depth, ready in 32 minutes.

# What You'll Need:

→ Chocolate Base

01 - 6 oz dark chocolate (60–70% cocoa), chopped
02 - 1/2 cup unsalted butter

→ Wet Ingredients

03 - 1/2 cup sourdough discard (unfed, room temperature)
04 - 3/4 cup granulated sugar
05 - 1/4 cup brown sugar, packed
06 - 2 large eggs
07 - 1 tsp pure vanilla extract

→ Dry Ingredients

08 - 2/3 cup all-purpose flour
09 - 1/4 cup unsweetened cocoa powder
10 - 1/2 tsp baking powder
11 - 1/2 tsp fine sea salt

→ Optional Add-ins

12 - 3.5 oz chocolate chips or chunks
13 - 1/2 cup chopped walnuts or pecans

# How To Make It:

01 - Preheat the oven to 350°F. Line two baking sheets with parchment paper.
02 - In a heatproof bowl, melt the dark chocolate and butter together over a pot of simmering water (double boiler method), stirring until smooth. Remove from heat and let cool slightly.
03 - In a large mixing bowl, whisk together the granulated sugar, brown sugar, eggs, and vanilla extract until pale and slightly thickened (about 2 minutes).
04 - Stir in the sourdough discard until fully incorporated.
05 - Pour the melted chocolate-butter mixture into the egg mixture, whisking until smooth and glossy.
06 - Sift together the flour, cocoa powder, baking powder, and sea salt. Fold the dry ingredients into the wet mixture with a spatula until just combined.
07 - Gently fold in the chocolate chips and nuts, if using.
08 - Using a cookie scoop or tablespoon, drop dollops of dough (about 2 tablespoons each) onto the prepared baking sheets, spacing them 2 inches apart.
09 - Bake for 10–12 minutes, or until the cookies are puffed with crackly tops and just set around the edges (centers will look soft).
10 - Allow cookies to cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely.

# Expert Tips:

01 -
  • The sourdough discard adds this incredible depth that makes these taste like they came from a fancy bakery
  • That crackly top pattern forms like magic and gives way to the most fudgy center imaginable
02 -
  • I learned the hard way that hot chocolate will scramble your eggs if you do not let it cool slightly first
  • The centers might look underbaked when you pull them out but that is exactly what creates the fudgy texture
03 -
  • Chop your chocolate into irregular chunks instead of using chips for those melty chocolate puddles
  • A pinch of espresso powder enhances the chocolate without making these taste like coffee