Tasty Sourdough Discard Brownies

Name: Tasty Sourdough Discard Brownies
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: American
Ingredients: 1 cup sourdough starter (discard); 1/2 cup unsalted butter; 1 cup sugar; 2 large eggs; 1 tsp vanilla extract; 1/2 cup all-purpose flour; 1/2 cup cocoa powder; 1/4 tsp salt; 1/2 cup chocolate chips (optional)

Posted on March 27, 2026

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This Sourdough Discard Brownies recipe comes together in about 30 minutes and is all baked in one pan, creating a quick and easy dessert that your family will absolutely love!

Ingredients Breakdown

Let’s dive into the ingredients for these amazing brownies! You probably have most of these already, making it an ideal weeknight treat. Here’s what you’ll need:

1 cup sourdough starter (discard): Perfect for using that leftover starter from your last loaf of bread!
1/2 cup unsalted butter: Always use unsalted so you can control the saltiness, just a couple pinches might be necessary later!
1 cup sugar: This sweetens the deal, don’t skimp here!
2 large eggs: For binding and richness.
1 tsp vanilla extract: Adds that warm, comforting flavor that makes these brownies even better.
1/2 cup all-purpose flour: Gives structure to your brownies.
1/2 cup cocoa powder: This is where the chocolatey goodness comes in, try to use high-quality cocoa for the best flavor!
1/4 tsp salt: Just a couple pinches to balance the sweetness.
1/2 cup chocolate chips (optional): I mean, can you ever really have too much chocolate? But you can totally leave these out if you prefer!

Pro Tip: If you find yourself without eggs, no fear! You can replace each egg with 1/4 cup unsweetened applesauce, which keeps things moist and delicious!

Let’s Get Cooking!

Now, grab your apron and let’s make these brownies! Here’s how I whip them up:

Preheat your oven to 350°F (175°C) and grease a 9×9 inch baking pan. This is the step everyone dreads, but trust me, you want those brownies to come out easily!
In a mixing bowl, melt the butter over low heat (or in the microwave if you’re feeling lazy). Stir in the sourdough starter and sugar until well combined. The smell of the butter melting is honestly one of life’s simple pleasures.
Next, add in the eggs and vanilla extract, mixing well until it’s all nice and smooth.
In a separate bowl, sift together the all-purpose flour, cocoa powder, and salt. Yes, go ahead, sift! It makes a difference in making sure everything is evenly mixed and gives the brownies that perfectly tender texture.
Gradually add the dry ingredients to the wet mixture, stirring until just combined. You want to see some streaks of flour but don’t overmix. This is going to make your brownies perfectly fudgy.
If you’re going for the chocolate chip version, now’s the perfect time to fold in the chocolate chips. I mean, yum! What’s not to love about more chocolate?
Pour the batter into your prepared baking pan and smooth the top with a spatula. And let’s be honest, feel free to lick the bowl afterward.
Bake for 25-30 minutes, or until a toothpick inserted into the center comes out with a few deliciously moist crumbs. The edges will look set, but the center will be soft. Just how we like our brownies, right?
Let cool for a bit before cutting into squares and serving. They’ll smell incredible, and the chocolate flavor will make you feel all cozy inside!

If you loved this recipe, be sure to check out my best Pumpkin Sourdough Bread, my Sourdough Cheese Crackers or my Sourdough Discard Focaccia!

Why These Sourdough Discard Brownies Work

Quick & Easy

Comes together in under 30 minutes! Perfect for when you have a craving but don’t want to spend forever in the kitchen.

Budget-Friendly

All ingredients are affordable and usually found in your pantry. You don’t need to break the bank to make something delicious!

Customizable

You can use whatever ingredients you have lying around. Want to swap the cocoa with some peanut butter? Go for it! It’s your kitchen, and your creativity is the limit!

Comfort Food

These brownies are so rich and chocolaty that just one bite will transport you back to your childhood, so comforting, trust me!

Serving and Storage Tips

When it comes to serving, I love to enjoy these brownies with a big glass of milk or even a scoop of vanilla ice cream on top. You could also sprinkle a little sea salt on them before serving for that sweet-salty combo that everyone raves about!

Storage

These brownies keep well at room temperature for about 3-4 days in an airtight container. If you’re a chocolate fanatic like me, they likely won’t last that long!

Reheating Instructions

If you need to reheat, just pop them in the microwave for 10-15 seconds. You don’t want them too hot, just warm enough to get those chocolate chips melty again. Yes, please!

Freezer Friendly?

Absolutely! Just wrap the brownies tightly in foil or in a freezer-safe container. They can be frozen for up to 3 months. When you’re ready for a treat, let them thaw at room temperature before enjoying.

Oh, and before I forget, if you’re like me and find yourself with leftover sourdough starter more often than not, why not turn that discard into super yummy brownies? It’s a great way to avoid waste and feed your sweet tooth at the same time. Seriously, it’s a win-win!

Remember, cooking is all about using what you’ve got, experimenting, and enjoying the leftovers (if there are any)! So go ahead and give this Tasty Sourdough Discard Brownies recipe a try, you won’t be disappointed, and your family will be begging for more.

Happy cooking! And for more recipes follow us on Pinterest.