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Sourdough Discard Brownies

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Delicious and tangy, these sourdough discard brownies are a sweet treat and a great way to use up your Sourdough discard.

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A stack of sourdough brownies on a checked napkin

I have a confession to make. I’ve never really liked Brownies! I know, I know. My husband says it’s because I haven’t tried a really good one, so I decided to make one.

It worked, because I ADORE these sourdough brownies; with their fudgy, yummy centre and slight sourdough tang, I am a converted woman!! My kids are over the moon, since there’s definitely more brownies in our future!

Now I’m clearly not a brownie connoisseur, but I personally think these brownies are even better the next day, after a night in the refrigerator!

What’s so great about sourdough?

Sourdough is everywhere right now and during Lockdown, it seemed like everyone was trying it, but why? What is all the fuss about??

Sourdough is a collection of wild yeast that is caught from the air and multiplies to rise flour products in much the same way that baker’s yeast does.

Sourdough does something else though. A sourdough starter is a little system of different types of yeast and enzymes that start to break down the gluten and sugars in the grains, making them easier to digest. This means our bodies can use more of the nutrients in the food, like folate, magnesium and calcium, and it doesn’t cause as big of a blood sugar spike as normal bread does.

It produces a slight tang to the finished product, and this is what we want from our discard recipes.

Tips for making these Sourdough Discard Brownies

Sourdough brownies on a blue and white China plate
  • There are 2 ways you can make this recipe

-The quick way: using the discard from your sourdough, mixing with all the other ingredients and baking.

-Slow ferment: for better nutrition, you can use active sourdough and start the day before.

  • Leave to cool completely in the pan when the brownies are baked. I know it’s hard, but its worth it.
  • Make sure your eggs are at room temperature.
  • If you are new to sourdough, learn how to make a sourdough starter here

FAQs

Why sourdough and not normal brownies?

Its a great way to use up sourdough starter instead of throwing it out, and it adds a slight tang that cuts through the sweetness of traditional brownies.

Can I use active sourdough starter?

Of course! If you use the quick method with active starter it will be less tangy but still tasty.

Can I long ferment the brownies?

Absolutely. this will make them easier for our bodies to digest, so its a great idea to let the starter do its job! To long ferment, mix the flour, starter, sugar and half a cup of melted butter the night before and cover. (It can be left up to 24 hrs) then just add the rest of the ingredients and bake.

Things you’ll need:

Please note that this page contains affiliate links. While we only recommend products that we believe in, we may benefit financially from any purchases you make.

Saucepan

Measuring cups and spoons

Mixing bowls of various sizes

Spatula

8×12 Baking dish (Mine is similar to this)

Ingredients:

butter

chocolate, broken into pieces

vanilla extract (click here for easy homemade vanilla recipe)

sugar

all purpose flour

cocoa powder

salt (or use salted chocolate! yum!)

eggs

and of course, the sourdough starter

A collection of jars and other ingredients to make sourdough brownies

Step by Step Instructions for Sourdough Discard Brownies

Lets dive right in and make them!

Melted butter and chocolate in a pan

Preheat the oven to 175c/350f and line your baking pan with parchment paper.

In a medium saucepan, melt the butter on a low heat. Remove from the heat and add in the chocolate and vanilla and stir together to melt the chocolate.

Melted cocoa in a pan

Add in the cocoa powder and whisk until all the lumps are gone. Set aside to cool (so we don’t scramble the eggs!)

Once cooled, mix in the eggs, sugar and Sourdough discard until combined.

Thick Sourdough Brownie batter in a pan

Gently mix in the flour and salt (leave out the salt if using salted chocolate), until just combined. Be careful not to over mix, we want a juicy fudgy brownie!

Sourdough brownie batter in a parchment lined tray

Pour the brownie batter into the prepared baking dish and bake for 35-40 mins. The toothpick method doesn’t work for brownies, we want them slightly underdone, that’s where the delicious fudginess comes from. You’ll know when they are done when the edges are set but still appears slightly under baked in the centre.

Baked Sourdough Brownies in a tray

Leave to cool completely ( if you can) as it will help them stay together better.

Sliced sourdough brownies on a board with a knife

Then enjoy this little slice of heaven with a nice cup of coffee, or glass of milk. Or wait until tomorrow. Trust me, its a revelation!

Sourdough brownies stacked on a wooden chopping board

Store in an air tight container for 2-3 days, but honestly, I doubt they will last that long… You could also freeze them for up to 3 months.

If you liked this recipe, and need more ideas of what to do with your sourdough discard, how about

And if you’re completely new to sourdough, check out my post on making a sourdough starter from scratch.

So let me know in the comments if these brownies hit the spot, and dont forget to share this page. Thanks friends.

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Sourdough Discard Brownies

Kimberley
Fudgy and mouth watering, these sourdough brownies have just a slightest tang, making them the perfect treat.
Prep Time 25 minutes
Cook Time 35 minutes
Total Time 1 hour
Course Dessert
Cuisine American
Servings 12

Ingredients
  

  • 1/2 Cup (120g) Butter
  • ! Cup (175g) Good quality dark chocolate Salted, optional
  • 1 tbsp Vanilla extract
  • 2/3 Cup (90g) All purpose flour
  • 3/4 Cup (170g) Sugar
  • 1/2 Cup (60g) Cocoa powder
  • 1/2 tsp Salt (exclude if using salted chocolate)
  • 2 Eggs
  • 1/2 Cup (60g) Sourdough starter unfed

Instructions
 

  • Preheat the oven to 175c/350f and line an 8 x 12" pan with parchment paper.
  • In a medium pan, melt butter on a medium to low heat. Take off the heat and add in chocolate, stirring to melt.
  • Whisk in the cocoa powder until there are no lumps, and set aside to cool. (we don't want the eggs to scramble!)
  • Once cooled, add in the eggs, sugar and sourdough discard and mix well.
  • Add in the flour and salt (if using) and gently mix until just combined. Don't overmix at this stage, go slow.
  • Pour batter into the prepared baking pan.
  • Bake for 35 mins, or until the edges look cooked and pull away slightly from the pan, and the middle is still slightly jiggly!
  • Allow pan to cool completely before slicing and serving

Notes

Make sure you use room temperature eggs, and allow mixture to cool before adding the eggs.
Allowing the brownies to completely cool is hard but means the flavour develops and the structure holds up when slicing. it’s worth it, trust me.
Enjoy even more after a night in the refrigerator, when fudginess is at it’s peak.
Store in an airtight container at room temp for 2-3 days, in the refrigerator for 3-5 days or freeze for up to 3 months.
Reheating: Thaw completely if frozen, place on a microwavable plate and reheat for 10-15 secs
Keyword sourdough brownie

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