You’ve got sourdough discard and a sweet tooth, and you want brownies with a seriously fudgy center. These sourdough discard brownies give you rich chocolate flavor, chewy edges, and a gooey middle — using leftover starter to boost moisture and tang. In this guide you’ll learn exact measurements, step-by-step baking times, and quick tricks so your sourdough discard brownies turn out fudgy every time.
What You’ll Need (ingredients + tools)
Ingredients:
- 1 cup (240 g) sourdough discard (100% hydration)
- 6 oz (170 g) semi-sweet chocolate, chopped
- 1/2 cup (113 g) unsalted butter
- 3/4 cup (150 g) granulated sugar
- 2 large eggs, room temperature
- 1 tsp vanilla extract
- 1/3 cup (45 g) all-purpose flour
- 2 tbsp unsweetened cocoa powder
- 1/4 tsp salt
- Optional: 1/2 cup chopped nuts or chocolate chips
Tools:
- 8×8-inch baking pan, parchment
- Heatproof bowl for melting
- Whisk and rubber spatula
- Instant-read thermometer (optional)
Preparing Your Ingredients
- Bring eggs and discard to room temperature for even mixing.
- Chop chocolate finely so it melts smoothly.
- Line your 8×8 pan with parchment, leaving an overhang to lift brownies out easily.
- Preheat oven to 350°F (175°C).
Helpful tips:
- If your discard is very sour, taste a teaspoon; a mild tang is perfect.
- Use a digital scale for accurate chocolate-to-butter ratios.
Step-by-Step Instructions (batter + baking)
- Melt 6 oz chocolate and 1/2 cup butter together in a heatproof bowl over simmering water, stirring until smooth. Remove from heat and cool 2 minutes.
- Whisk 3/4 cup sugar into the chocolate mixture. Add 2 eggs one at a time, whisking until glossy. Stir in 1 tsp vanilla.
- Fold in 1 cup sourdough discard and mix until combined.
- Sift 1/3 cup flour, 2 tbsp cocoa, and 1/4 tsp salt; fold gently into batter. Stir in optional 1/2 cup chips or nuts.
- Pour into the prepared pan, smoothing the top.
Baking:
- Bake at 350°F (175°C) for 18–22 minutes. Start checking at 18 minutes. A toothpick should come out with moist crumbs, not dry.
- For extra fudgy centers, cool completely in the pan, then refrigerate 1–2 hours before slicing.
Pro tricks:
- Don’t overmix once flour is added.
- If your oven runs hot, drop temperature by 25°F and add a few extra minutes.
Serving, Storage, and Variations
- Serve warm with a scoop of vanilla or cooled for clean slices.
- Store at room temperature in an airtight container for 3 days. Refrigerate up to 7 days for a denser fudgy texture. Freeze for up to 3 months (wrap tightly).
- Variations:
- Add espresso powder (1 tsp) to deepen chocolate flavor.
- Swap half the chocolate for dark chocolate for a richer bite.
- Stir in 1/2 cup chopped toasted pecans for crunch.
These sourdough discard brownies keep well and make a great last-minute dessert. If your center is too cakey, shorten baking time by 2–4 minutes next batch. If it’s too gooey, add 1–2 minutes.
You’ve just learned how to turn discard into decadent brownies with fudgy centers. Pin this guide for your next bake and save it for a rainy afternoon dessert. Which tip will you try first — chilling for cleaner slices or adding espresso for extra depth? Ready to make these happen? Let’s do it!