Sourdough Discard Brownies with Mint Frosting

Highlighted under: Flour & Frosting Recipes

Sourdough Discard Brownies with Mint Frosting are a delicious way to use up leftover sourdough starter while indulging in a rich chocolate treat. Topped with a refreshing mint frosting, these brownies are sure to impress.

Anna

Created by

Anna

Last updated on 2025-12-27T21:55:27.498Z

These Sourdough Discard Brownies are not just a creative way to reduce waste from your sourdough baking, but they also deliver a fudgy texture and deep chocolate flavor. The mint frosting adds a refreshing twist, making them perfect for any occasion.

Why You'll Love This Recipe

  • Rich chocolate flavor complemented by fresh mint
  • Perfectly moist texture that satisfies every craving
  • An innovative way to use sourdough discard

The Magic of Sourdough Discard

Sourdough discard is often overlooked, but it holds incredible potential for enhancing your baked goods. Rather than tossing out your leftover starter, you can transform it into delightful treats like these brownies. Utilizing sourdough discard not only minimizes food waste but also adds a subtle tangy flavor that complements the rich chocolate. It's a win-win for both your taste buds and the environment!

In addition to being eco-friendly, baking with sourdough discard introduces beneficial bacteria into your recipes. This probiotic goodness may aid digestion and contribute to a healthier gut microbiome. So, while you indulge in these fudgy brownies, you're also giving your body a little extra love. It's a delicious way to make the most of your sourdough journey!

Mint: A Refreshing Twist

Mint is a versatile herb that can elevate your desserts with its invigorating flavor. In these Sourdough Discard Brownies, the mint frosting not only adds a refreshing touch but also balances the richness of the chocolate. Mint has been celebrated for centuries, not just for its flavor, but also for its potential health benefits, including aiding digestion and providing a cooling sensation.

Using fresh mint or high-quality peppermint extract can make a significant difference in the taste of your frosting. The vibrant green color can also add a visually appealing element to your brownies, making them perfect for special occasions or gatherings. Keep in mind that a little goes a long way, so start with a small amount and adjust to your taste preference!

Tips for Perfect Brownies

Achieving the perfect brownie texture is an art that can be mastered with a few simple tips. First, be careful not to overmix your batter once you add the dry ingredients. This can lead to dense and chewy brownies rather than the desired fudgy texture. Combine the components until just mixed, and then fold in the chocolate chips gently to preserve that moist consistency.

Another key factor is baking time. Every oven is different, so keep an eye on your brownies as they bake. The toothpick test is a reliable method; insert it into the center, and if it comes out with a few moist crumbs, they’re ready to come out of the oven. Allow them to cool completely before frosting to ensure the mint topping adheres well and doesn’t melt.

Ingredients

Brownies

  • 1 cup sourdough discard
  • 1/2 cup unsalted butter, melted
  • 1 cup granulated sugar
  • 2 large eggs
  • 1 teaspoon vanilla extract
  • 1/2 cup all-purpose flour
  • 1/3 cup unsweetened cocoa powder
  • 1/4 teaspoon salt
  • 1/2 cup chocolate chips

Mint Frosting

  • 1/2 cup unsalted butter, softened
  • 2 cups powdered sugar
  • 2 tablespoons milk
  • 1 teaspoon peppermint extract
  • Green food coloring (optional)

Make sure to measure your ingredients accurately for the best results!

Instructions

Preheat the Oven

Preheat your oven to 350°F (175°C) and grease a 9x9 inch baking pan.

Make the Brownie Batter

In a mixing bowl, combine the melted butter and granulated sugar. Stir in the eggs and vanilla extract until well combined. Add the sourdough discard and mix thoroughly.

Add Dry Ingredients

Sift together the flour, cocoa powder, and salt. Gradually add the dry ingredients to the wet mixture until just combined. Fold in the chocolate chips.

Bake the Brownies

Pour the brownie batter into the prepared baking pan and spread evenly. Bake for 25 minutes or until a toothpick inserted in the center comes out with a few moist crumbs.

Prepare the Mint Frosting

While the brownies are baking, prepare the mint frosting. Beat the softened butter until creamy, then gradually add the powdered sugar. Mix in the milk and peppermint extract.

Add food coloring if desired.

Frost the Brownies

Once the brownies have cooled, spread the mint frosting evenly over the top. Cut into squares and serve.

Enjoy your delicious brownies with a cup of coffee or tea!

Serving Suggestions

These Sourdough Discard Brownies are delicious on their own, but you can elevate the experience by serving them with a scoop of vanilla ice cream or a dollop of whipped cream. The contrast of temperatures and textures will delight your guests and make for a fantastic dessert. Additionally, consider garnishing with fresh mint leaves or chocolate shavings for an extra touch of elegance.

For a more festive presentation, cut the brownies into fun shapes using cookie cutters. This is especially great for parties or holidays, allowing you to create themed treats that are sure to impress. Pairing these brownies with a cup of coffee or a glass of cold milk makes for a classic combination that satisfies every sweet tooth.

Storage Tips

To keep your Sourdough Discard Brownies fresh, store them in an airtight container at room temperature for up to three days. If you need to keep them longer, consider refrigerating them, where they can last up to a week. Just be sure to let them come to room temperature before serving to fully enjoy their rich flavor and fudgy texture.

You can also freeze these brownies for up to three months. Cut them into squares and wrap each piece tightly in plastic wrap before placing them in a freezer-safe bag. When you're ready to enjoy, simply thaw them in the refrigerator overnight or at room temperature for a few hours. This way, you can have a delicious chocolate treat available whenever a craving hits!

Secondary image

Questions About Recipes

→ Can I use a different type of frosting?

Yes, you can use any frosting you like, such as cream cheese or chocolate ganache.

→ What can I substitute for sourdough discard?

You can use unsweetened applesauce or yogurt as a substitute, though it will alter the flavor slightly.

→ How should I store these brownies?

Store them in an airtight container at room temperature for up to 4 days or in the fridge for up to a week.

→ Can I freeze the brownies?

Yes, you can freeze the brownies. Wrap them tightly in plastic wrap and store them in an airtight container for up to 3 months.

Sourdough Discard Brownies with Mint Frosting

Sourdough Discard Brownies with Mint Frosting are a delicious way to use up leftover sourdough starter while indulging in a rich chocolate treat. Topped with a refreshing mint frosting, these brownies are sure to impress.

Prep Time15 minutes
Cooking Duration25 minutes
Overall Time40 minutes

Created by: Anna

Recipe Type: Flour & Frosting Recipes

Skill Level: Intermediate

Final Quantity: 16 brownies

What You'll Need

Brownies

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

Mint Frosting

  1. 1/2 cup unsalted butter, softened
  2. 2 cups powdered sugar
  3. 2 tablespoons milk
  4. 1 teaspoon peppermint extract
  5. Green food coloring (optional)

How-To Steps

Step 01

Preheat your oven to 350°F (175°C) and grease a 9x9 inch baking pan.

Step 02

In a mixing bowl, combine the melted butter and granulated sugar. Stir in the eggs and vanilla extract until well combined. Add the sourdough discard and mix thoroughly.

Step 03

Sift together the flour, cocoa powder, and salt. Gradually add the dry ingredients to the wet mixture until just combined. Fold in the chocolate chips.

Step 04

Pour the brownie batter into the prepared baking pan and spread evenly. Bake for 25 minutes or until a toothpick inserted in the center comes out with a few moist crumbs.

Step 05

While the brownies are baking, prepare the mint frosting. Beat the softened butter until creamy, then gradually add the powdered sugar. Mix in the milk and peppermint extract. Add food coloring if desired.

Step 06

Once the brownies have cooled, spread the mint frosting evenly over the top. Cut into squares and serve.

Nutritional Breakdown (Per Serving)

  • Calories: 250 kcal
  • Total Fat: 14g
  • Saturated Fat: 8g
  • Cholesterol: 60mg
  • Sodium: 80mg
  • Total Carbohydrates: 30g
  • Dietary Fiber: 2g
  • Sugars: 20g
  • Protein: 3g