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    Home » SOURDOUGH » SOURDOUGH DISCARD

    Extra Fudgy Sourdough Discard Brownies

    Published: February 1, 2024 · Updated: February 1, 2024 by Ieva Greber · This post may contain affiliate links · 8 Comments

    Jump to Recipe Jump to Video Print Recipe

    If you're pondering the best choice for using your sourdough discard, this is it! The incorporation of sourdough discard not only reduces food waste but also adds an extra rich depth of flavour to these fudgy Sourdough Discard Brownies, making them a delightful treat for any occasion.

    Jump to:
    • Why Try Our Sourdough Discard Brownies
    • Ingredients and Substitutes
    • Equipment Needed
    • Christmas Sourdough ebook
    • Step-By-Step Method
    • Recipe Video
    • Troubleshooting & Recipe FAQs
    • How To Serve Sourdough Brownies?
    • Storage
    • Other Sourdough Discard Recipes To Try
    • Fudgy Sourdough Discard Brownies
    Two pieces of Sourdough discard brownies on a black shiny board.

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    Why Try Our Sourdough Discard Brownies

    • An easy recipe for the best brownies that even beginners can make.
    • Reduces food waste by using up extra sourdough discard!
    • These fudgy brownies have all the elements of a good brownie: gooey texture, crackly top and intense chocolate flavor. 
    • It's a great recipe when you run out of all-purpose flour or cake flour - there is no extra flour added to the brownie mix!
    • These delicious brownies stay fresh for longer due to excess sourdough starter added to them - so you can satisfy your chocolate cravings for longer! The acidity in sourdough discard can act as a natural preservative, potentially extending the freshness of brownies.
    • Sourdough discard adds a subtle tangy flavour to brownies, creating a more complex taste profile that complements the sweetness, enhancing the overall richness of the treat.
    • The moisture content in sourdough discard contributes to a fudgier texture in brownies. Just like it does in our Sourdough Blondies.

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    Ingredients and Substitutes

    • dark chocolate: 52% cocoa solids is your best option, broken up into pieces or semi-sweet chocolate chips. 
    • unsalted butter: can be replaced with salted butter but make sure to reduce the amount of salt to ¼ tsp. 
    • vegetable oil: can be replaced with rapeseed (canola) or sunflower oil. Do not use olive oil. 
    • eggs: large in the UK, extra-large in the US. 
    • egg white: large in the UK, extra-large in the US. 
    • sea salt: we use and love Maldon Sea Salt. 
    • caster sugar: also known as castor or superfine sugar. It can be replaced with any white sugar (white granulated sugar). 
    • light brown sugar: can be substituted with dark brown sugar.
    • vanilla bean paste: or vanilla extract. 
    • unsweetened cocoa powder: a.k.a. regular cocoa powder. Try using Dutch process cocoa: it gives these fudgy brownies an even deeper flavor. 
    • sourdough starter discard: can be replaced with an active sourdough starter (100% hydration). 
    Ingredients for Sourdough Discard Brownies on a light kitchen worktop.

    Find the quantities and step-by-step instructions in the recipe card at the bottom of the post. 

    Equipment Needed

    • medium pan: for melting butter and chocolate. 
    • electric handheld mixer: we use and love the Kenwood electric mixer. 
    • rubber spatula: or a wooden spoon. 
    • square 24x24 cm baking tray: or other high-rimmed tray with a similar surface area. We do not recommend using a glass or ceramic baking dish for baking brownies in!
    • baking parchment paper: we always use and love Bacofoil Baking Parchment. 
    A cover of The Sourdough Christmas ebook.

    Christmas Sourdough ebook

    Celebrate the holiday season with a unique twist this year with our 24 Christmas Sourdough recipes! Discover the magic of using active sourdough starter, sourdough discard, and leftover baked sourdough bread to create a memorable and flavoursome Christmas feast.

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    Step-By-Step Method

    Preheat the oven to 180°C Fan. Line a square 24x24 cm baking tray with parchment paper.

    Place the butter, chocolate chunks and vegetable oil into a medium pan, and set it over medium-low heat. Stir it once in a while until the butter melts, then set it aside for the chocolate to melt in the residual heat.

    Butter and chocolate in a small copper pan.
    Butter melted with chunks of unmelted dark chocolate chunks.
    Glossy Butter and chocolate ub a copper saucepan.

    In the meantime, using an electric handheld mixer (or stand mixer fitted with a whisk attachment), whisk the eggs, egg white, salt, vanilla, caster sugar and light brown sugar in a large bowl, until the sugar dissolves and the mixture is light and fluffy.

    Two types of sugar, egg, and vanilla in a large metal mixing bowl.

    To your melted chocolate, add the cocoa powder and sourdough starter discard and mix to combine.

    Pour the chocolate mixture into your egg mixture and gently fold everything together.

    Cocoa powder added to the melted chocolate and butter mixture.
    Adding sourdough discard to the chocolate mixture.
    Mixing in discard and cocoa powder.
    Chocolate mixture beinf mixed into the egg mixture to form a sourodugh brownie batter.

    Pour the brownie batter into a prepared baking tray and bake in the centre of the oven for 30-35 minutes. The brownies should have a shiny top that cracks when cut. 

    Sourdough discard brownie batter in a square baking tray lined with parchment paper.
    Baked sourdough brownie cooling in a baking tray.

    Take the brownies out of the oven and leave them to cool down and firm up for at least 30 minutes before slicing (It's the hardest thing to do...!). 

    Recipe Video

    Troubleshooting & Recipe FAQs

    How To Know If Brownies Are Done?

    Look at the edges and the top of the brownies. The edges should be set and slightly firm, while the top should have a shiny, crackly surface. Another great way to check is a toothpick test. Insert a toothpick into the centre of the brownie pan. If it comes out with a few moist crumbs sticking to it, the brownies are done. However, if it comes out with wet batter, they need more time. 

    Why Do My Brownies Not Have Cracky Tops?

    If your brownies lack a crackly top, consider the following factors. First, avoid overmixing the batter, as excessive aeration can hinder the formation of the delicate crust. Ensure the correct fat-to-sugar ratio in your recipe, as this balance plays a key role in achieving the desired texture on top. Additionally, be mindful of proper baking time; underbaking can prevent the crust from forming, while overbaking may lead to a dry top. Adjust these elements, and you may enhance the crackly appearance of your brownies.

    Why Do I Use Two Types of Sugar To Make Perfect Brownies?

    Using both white and brown sugar in this recipe contributes to better brownies - both texture and flavour-wise. Brown sugar contains molasses, adding a rich, fudgy and chewy quality to the brownies. White sugar contributes to the crispy edges and crackly top. 

    Can I Reheat Sourdough Brownies?

    Yes, you can. Heat individual slices in a microwave for 15-20 seconds. Alternatively, wrap each sourdough brownie slice in foil and warm in the oven for 5-10 minutes at 140°C. 

    Two pieces of Sourdough discard brownies on a black shiny board.

    How To Serve Sourdough Brownies?

    The most important thing to remember is to let the brownies cool down and firm up before slicing them into portions. Once you've done so, you can heat the brownies in a microwave for 15-20 seconds and serve them warm, or simply serve them at room temperature. 

    A delicious way to serve these brownies is with a dusting of icing sugar and a scoop of vanilla ice cream, but we think a dollop of creme fraiche is even better. The tartness of it creates a perfect balance with the rich chocolate brownies. 

    A piece of sourdough discard brownie served with berries, a dollop of creme fraiche and a dusting of cocoa powder on a black plate.

    Another wonderful way to serve these is with chantilly cream and some cherry compote or raspberry coulis.  

    Storage

    Once brownies are sliced into portions, you can store them in an airtight container at room temperature for up to 3-4 days, or in the fridge for up to 1 week. The good news is that Sourdough Discard Brownies actually keep fresh for longer compared to regular brownies, thanks to the addition of sourdough starter. 

    If you are stacking the Sourdough Brownies, make sure to separate them with a sheet of parchment paper. 

    These Easy Sourdough Brownies also freeze beautifully. Simply wrap each individual slice tightly in plastic wrap, and place them in an airtight container or ziplock bag. Thaw for a couple of hours at room temperature when ready to enjoy - it's a perfect way to have this ultimate chocolate-y treat whenever you get a craving. 

    Other Sourdough Discard Recipes To Try

    Looking for more sourdough discard recipes? Try Sourdough Chocolate Chip Cookies, Sourdough Sugar Cookies or Overnight Sourdough Pancakes (or Sourdough Blueberry Pancakes) next!

    You mustn't miss our Sourdough Lemon Poppy Seed Muffin recipe and Sourdough Canelés either!

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    Need even more ideas? Find lots of sourdough recipes that aren't bread here!

    Two pieces of Sourdough discard brownies on a black shiny board.

    Fudgy Sourdough Discard Brownies

    If you're pondering the best choice for using your sourdough discard, this is it! The incorporation of sourdough discard not only reduces food waste but also adds an extra rich depth of flavour to these fudgy Sourdough Discard Brownies, making them a delightful treat for any occasion.
    5 from 11 votes
    Prevent your screen from going dark
    Print Recipe Pin Recipe
    Prep Time 15 minutes mins
    Cook Time 35 minutes mins
    Total Time 50 minutes mins
    Course Dessert
    Cuisine American, British, Worldwide
    Servings 12 -16 brownies
    Calories 261 kcal

    Equipment

    • Square 24×24 cm Baking Tray ideally, not glass or ceramic
    • Electric Handheld Mixer

    Ingredients
     

    • 150 g (5.29 oz) dark chocolate 52-54% cocoa solids, broken up into pieces
    • 50 g (1.76 oz) unsalted butter
    • 60 g (0.28 cups) vegetable oil
    • 2 large eggs
    • 1 large egg white
    • ½ teaspoon salt
    • 150 g (¾ cups) caster sugar
    • 100 g (½ cups) light brown sugar
    • 1 teaspoon vanilla bean paste
    • 50 g (0.58 cups) unsweetened cocoa powder
    • 120 g (0.48 cups) sourdough starter active or discard (100% hydration)

    Instructions
     

    • Preheat the oven to 180° C Fan. Line a square 24x24 cm baking tray with parchment paper.
    • Place the butter, chocolate chunks and vegetable oil into a medium pan, and set it over low heat. Stir it once in a while until the butter melts, then set it aside for the chocolate to melt in the residual heat.
    • In the meantime, using an electric handheld mixer, whisk the eggs, egg white, salt, vanilla, caster sugar and light brown sugar in a large bowl, until light and fluffy.
    • To your melted chocolate, add the cocoa powder and sourdough starter and mix to combine.
    • Pour the chocolate mixture into your egg mixture and gently fold everything together.
    • Pour the brownie batter into a prepared baking tray and bake in the centre of the oven for 30-35 minutes.
    • Take the brownies out of the oven and leave them to cool down and firm up for at least 30 minutes before slicing.

    Video

    Nutrition

    Calories: 261kcalCarbohydrates: 31gProtein: 3gFat: 15gSaturated Fat: 7gPolyunsaturated Fat: 3gMonounsaturated Fat: 4gTrans Fat: 0.2gCholesterol: 37mgSodium: 118mgPotassium: 179mgFiber: 3gSugar: 24gVitamin A: 149IUCalcium: 27mgIron: 2mg
    Keyword Fudgy Sourdough Brownies, Sourdough Brownies, Sourdough Discard Brownies
    Tried this recipe?Let us know how it was!
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    Comments

    1. Ned says

      February 11, 2024 at 3:42 pm

      5 stars
      I love extra fudge-y brownies and these hit the spot! My whole family loved them!

      Reply
      • Ieva Greber says

        February 15, 2024 at 7:41 pm

        Thanks, Ned! 🙂

        Reply
    2. Katherine says

      February 14, 2024 at 8:22 pm

      5 stars
      This was such a great way to use sourdough discard for Valentines Day treat!

      Reply
      • Ieva Greber says

        February 15, 2024 at 7:46 pm

        Nothing like a fudgy brownie on a Valentine's day...💕

        Reply
    3. Sky says

      February 15, 2024 at 12:24 pm

      5 stars
      I love finding recipes that use sourdough discard, and this one did not disappoint! My brownies turned out perfect!

      Reply
      • Ieva Greber says

        February 15, 2024 at 7:46 pm

        Thanks for giving our recipe a try! 🙂

        Reply
    4. Saif says

      February 23, 2024 at 9:13 am

      5 stars
      This brownies is absolutely gorgeous. It looks so fudgy...

      Reply
    5. Nikki says

      March 05, 2024 at 3:13 pm

      5 stars
      These chocolatey, rich and delicious brownies are calling my name. They are a fantastic treat that my family are going to devour.

      Reply
    5 from 11 votes (6 ratings without comment)

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    Author of the blog holding a fork with spaghetti on it.

    Hi, I am Ieva – the cook and baker in our North Wales home. I share my life with my husband Seb, who doubles as my number-one taste tester, our golden retriever Sawyer, who’s always on crumb patrol and multiple sourdough starters. My days revolve around food—whether I’m experimenting with new recipes, tending to my veggie garden, or sneaking bites of “taste tests” (quality control, of course). Cooking isn’t just a passion; it’s my way of keeping Seb from reaching ‘hangry’ levels! Somebody HAS to feed Seb…

    More about me →

    Two pages of the sourdough starter troubleshooting guide with an active rye sourdough starter photo.

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