Sourdough Discard Brownies with Marshmallow

Highlighted under: Home-Style Dessert Bakes

Indulge in these decadent Sourdough Discard Brownies with Marshmallow, combining the rich flavors of chocolate and the unique tang of sourdough.

Emily

Created by

Emily

Last updated on 2025-12-27T20:18:27.436Z

These Sourdough Discard Brownies are not only a delicious treat but also a wonderful way to utilize your sourdough discard. Topped with a layer of fluffy marshmallow, they make for an irresistible dessert that everyone will love.

Why You'll Love This Recipe

  • Rich chocolate flavor balanced with a hint of sourdough tang
  • Chewy texture with a gooey marshmallow topping
  • A creative way to reduce waste and enjoy delicious brownies

The Perfect Use for Sourdough Discard

If you're someone who enjoys baking sourdough bread at home, you likely find yourself with a surplus of sourdough discard. Instead of throwing it away, transform it into something delicious! This recipe for Sourdough Discard Brownies with Marshmallow allows you to utilize that extra starter while creating a decadent treat. Not only does it reduce waste, but it also infuses the brownies with a subtle tang that beautifully complements the rich chocolate flavor.

Using sourdough discard in baking not only helps achieve a unique flavor profile but also adds beneficial probiotics to your dessert. The fermentation process in sourdough starter can enhance the texture and moisture of your baked goods, making these brownies even more delightful. It's a win-win situation; you get to enjoy a delicious dessert while minimizing food waste!

The Chocolate Experience

Chocolate lovers will rejoice at the rich, deep cocoa flavor in these brownies. The combination of unsweetened cocoa powder and sugar creates an irresistible sweetness that balances perfectly with the hint of sourness from the sourdough. Each bite is a delightful explosion of chocolatey goodness that will satisfy your sweet tooth and leave you craving more.

What sets these brownies apart is their chewy texture, which is made even more indulgent by the gooey marshmallow topping. As the brownies bake, the marshmallows become fluffy and slightly caramelized, adding a delightful contrast to the rich chocolate base. This delightful combination of flavors and textures makes these brownies uniquely satisfying.

A Treat for Any Occasion

These Sourdough Discard Brownies with Marshmallow are perfect for any occasion, whether it's a casual family gathering, a potluck, or simply a treat for yourself. They are easy to make and require minimal effort, making them a go-to recipe for novice and experienced bakers alike. With just a few basic ingredients, you can whip up a batch in no time.

Consider serving these brownies at your next event. Their unique flavor will likely spark conversations, and they'll disappear quickly from the dessert table. Plus, they make for a great gift or a sweet surprise for friends and family. Sharing is caring, and with these brownies, you’ll spread joy and deliciousness wherever you go!

Ingredients

Gather these ingredients to create the perfect batch of brownies.

Brownie Ingredients

  • 1 cup unsweetened cocoa powder
  • 1 cup sugar
  • 1/2 cup unsalted butter, melted
  • 1 cup sourdough discard
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1 cup all-purpose flour
  • 1/2 teaspoon salt
  • 1/2 teaspoon baking powder
  • 1 cup mini marshmallows

Ensure all ingredients are at room temperature for the best results.

Instructions

Follow these steps to create your delicious brownies.

Preheat the Oven

Preheat your oven to 350°F (175°C) and grease a 9x13 inch baking pan.

Mix Ingredients

In a large bowl, combine the melted butter, sugar, and cocoa powder. Mix until smooth, then add the sourdough discard, eggs, and vanilla extract. Stir until fully combined.

Add Dry Ingredients

In a separate bowl, whisk together the flour, salt, and baking powder. Gradually add this mixture to the wet ingredients, stirring until just combined.

Pour into Pan

Pour the brownie batter into the prepared baking pan and spread evenly.

Bake

Bake in the preheated oven for 20 minutes.

Add Marshmallows

Remove from the oven, sprinkle mini marshmallows on top, and bake for an additional 5 minutes until the marshmallows are fluffy and slightly golden.

Cool and Serve

Let the brownies cool in the pan for at least 15 minutes before cutting into squares and serving.

Enjoy your delicious brownies with a scoop of ice cream on the side!

Storing and Reheating

To keep your Sourdough Discard Brownies fresh, store them in an airtight container at room temperature for up to four days. If you want to keep them for a longer period, consider freezing the brownies. Wrap them tightly in plastic wrap and then place them in a freezer-safe bag. They can be frozen for up to three months, allowing you to enjoy a sweet treat whenever you desire.

When you're ready to enjoy a brownie from the freezer, simply let it thaw at room temperature for a few hours or microwave it for a few seconds to enjoy that fresh-baked warmth. The marshmallows may lose some of their fluffiness during freezing, but the chocolatey goodness will still be there, ensuring a delicious treat every time.

Variations and Add-Ins

Feel free to customize your Sourdough Discard Brownies by adding your favorite mix-ins! Chopped nuts, such as walnuts or pecans, can provide an extra crunch and depth of flavor. For a touch of decadence, consider swirling in some peanut butter or caramel sauce before baking. These variations not only enhance the flavor but also add a unique twist to the classic brownie.

If you're looking to make these brownies a bit healthier, you can substitute half of the all-purpose flour with whole wheat flour. You could also reduce the sugar slightly or replace it with a natural sweetener like maple syrup or coconut sugar. These tweaks can make your dessert a bit more nutritious without sacrificing taste!

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Questions About Recipes

→ Can I use active sourdough starter instead of discard?

Yes, active sourdough starter can work, but the brownies may have a stronger sour flavor.

→ How should I store leftover brownies?

Store them in an airtight container at room temperature for up to 3 days or refrigerate for longer freshness.

→ Can I freeze these brownies?

Yes, brownies can be frozen. Wrap them tightly in plastic wrap and aluminum foil, and they will keep for up to 3 months.

→ Can I substitute gluten-free flour?

Absolutely! Use a 1:1 gluten-free flour blend to make these brownies gluten-free.

Sourdough Discard Brownies with Marshmallow

Indulge in these decadent Sourdough Discard Brownies with Marshmallow, combining the rich flavors of chocolate and the unique tang of sourdough.

Prep Time15 minutes
Cooking Duration25 minutes
Overall Time40 minutes

Created by: Emily

Recipe Type: Home-Style Dessert Bakes

Skill Level: Intermediate

Final Quantity: 12 brownies

What You'll Need

Brownie Ingredients

  1. 1 cup unsweetened cocoa powder
  2. 1 cup sugar
  3. 1/2 cup unsalted butter, melted
  4. 1 cup sourdough discard
  5. 2 large eggs
  6. 1 teaspoon vanilla extract
  7. 1 cup all-purpose flour
  8. 1/2 teaspoon salt
  9. 1/2 teaspoon baking powder
  10. 1 cup mini marshmallows

How-To Steps

Step 01

Preheat your oven to 350°F (175°C) and grease a 9x13 inch baking pan.

Step 02

In a large bowl, combine the melted butter, sugar, and cocoa powder. Mix until smooth, then add the sourdough discard, eggs, and vanilla extract. Stir until fully combined.

Step 03

In a separate bowl, whisk together the flour, salt, and baking powder. Gradually add this mixture to the wet ingredients, stirring until just combined.

Step 04

Pour the brownie batter into the prepared baking pan and spread evenly.

Step 05

Bake in the preheated oven for 20 minutes.

Step 06

Remove from the oven, sprinkle mini marshmallows on top, and bake for an additional 5 minutes until the marshmallows are fluffy and slightly golden.

Step 07

Let the brownies cool in the pan for at least 15 minutes before cutting into squares and serving.

Nutritional Breakdown (Per Serving)

  • Calories: 380 kcal
  • Total Fat: 26g
  • Saturated Fat: 15g
  • Cholesterol: 195mg
  • Sodium: 85mg
  • Total Carbohydrates: 32g
  • Dietary Fiber: 3g
  • Sugars: 24g
  • Protein: 6g