
If you have a sourdough starter, and you’re looking for discard recipes, this one is it. I’ve tried so many brownie recipes over the years, and this one knocks it out of the park, every time. My children, especially my older daughter, request them for special occasions. It’s pretty easy to throw together, and very low fuss, you’re going to dirty your stand-mixer and a small sauce pan, that’s it!

Sourdough Brownies
Equipment
- 1 small sauce pan
- 1 stand mixer
- 1 spatula
- 1 8×8 baking dish
Ingredients
- 8 tablespoons (113g) unsalted butter
- 12 ounces (340g) semi sweet chocolate chips
- ½ cup (40g) cocoa powder
- 2 teaspoons (10g) vanilla extract
- 2 large eggs
- 1 egg yolk
- 1 cup (200g) granulated sugar
- ½ cup (110g) dark brown sugar
- ½ cup (125g) sourdough starter discard
- 1 cup (120g) all-purpose flour
- 1 teaspoon (5g) salt
Instructions
- Preheat oven to 350°F and line a 9" x 9" baking dish with parchment paper.
- Melt the butter in a small saucepan over low heat. Add the chocolate chips, vanilla extract and cocoa powder. Stir the ingredients until the chocolate chips have melted and the mixture is smooth. Remove the saucepan from the burner and set it aside to cool down.
- In the bowl of your stand mixer, beat the eggs, brown sugar and granulated sugar for 10 minutes until light and fluffy. Add the sourdough discard and chocolate mixture to the bowl beat on low until combined. Add the flour and salt and stir with a spatula until just combined. (The batter will be very thick.)
- Pour the batter into the baking dish and smooth the top. Bake for 35-40 minutes. Allow the brownies to cool completely in the pan after they come out of the oven.
- Remove the brownies from the pan by lifting them with the parchment paper and cut into squares. I usually do 16 squares, and even then, they could be cut into triangles, they're very rich.
Notes
Can also be frozen once baked and fully cooled.
Thanksgiving Gratitude

When my older daughter came home with a Gratitude Booklet from school, and I saw this photo, I melted. So of course, I whipped up a batch right then and there.