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Home > Recipes > Brownies & Bars

Published: Aug 21, 2020 ยท Last Updated On: Sep 25, 2024 by Natasha Minocha

Sourdough Peanut Butter Brownies

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I LOVE a good peanut butter dessert. And everything sourdough. So, these gorgeous brownies came to be! A beautiful blend of flavors and the classic brownie goodness, these Sourdough Peanut Butter Brownies are such a delight.

Trust me, if you're looking for a good recipe to put your sourdough discard to use, this one is a must-try.

Sourdough Peanut Butter Brownie| Egg;ess chocolate brownie recipe

Since itโ€™s been some time I baked brownies (the last batch was gluten-free and way back in June). And at that point, many of you asked for eggless brownies - here you go!

The sourdough peanut butter brownies turned out sublimely moist with a barely perceptible tang. The delicious ribbons of peanut butter running through the fudgy interior made them delectably soft. 

Sourdough Peanut Butter Brownie| Egg;ess chocolate brownie recipe

Whatโ€™s sourdough starter discard?

If youโ€™re new to sourdough (just in case), hereโ€™s the whole spiel.

The very nature of feeding sourdough starter means you have to discard some of it with every feeding. And thatโ€™s called sourdough discard. 

Itโ€™s perfectly usable, so I like to sneak it in dishes such as galettes, cinnamon pancakes, crackers, easy sourdough waffles, and cookies.

Lately, Iโ€™ve been adding it fairly regularly to my everyday bread. So instead of worrying about the sourdough discard jar languishing in my fridge, I have had to save some!

Sourdough Starter and discard

Oh, Iโ€™m still ironing out the wrinkles in the sourdough bread recipe, but keep an eye out. Iโ€™ll be sharing it pretty soon. 

Coming back to the sourdough peanut butter brownies โ€“ theyโ€™re eggless. Theyโ€™re made from a local, organic peanut brand in my bid to support small businesses, given the current economy.

How to Make Sourdough Peanut Butter Brownie?

Start by whisking flax powder with water in a 1:3 ratio. Leave it for 5 to 10 minutes till itโ€™s thick and goopy. 

Meanwhile, melt butter, peanut butter, and chocolate in a double boiler. I used 70% dark chocolate because I was gunning for the intense chocolate taste, and the complex flavor profile truly elevates the brownies.

Sourdough Peanut Butter Brownie| Egg;ess chocolate brownie recipe

Why a double boiler and not a microwave?

Because chocolate is temperature-sensitive. Too much heat and youโ€™ll be scraping burnt smudges of it from the pan โ€“ not something I wanted my precious dark chocolate to end up as. 

The double boiler gives me better control over the heat than a microwave.

How do you make a double boiler?

Fill a pot with an inch or two of water and bring it to a simmer. Place a metal or glass bowl on top of it. The fit should be snug. Add the butter, chocolate, and peanut butter to the upper bowl.

Keep stirring the ingredients until they are just about melted. Remove the heat source and then mix it till it's shiny and smooth.

Stir in raw sugar to this, followed by the flax egg, sourdough discard, vanilla extract, and all-purpose flour. Some cocoa powder, mix, and youโ€™ll have a thick batter ready to be poured in your baking pan.

Sourdough Peanut Butter Brownie| Egg;ess chocolate brownie recipe

Baking the sourdough peanut butter brownies

Right before you slide the batter in the oven, drop spoonfuls of peanut butter on top. With a wooden skewer, swirl the peanut butter and then bake. 

Quick notes:

It doesnโ€™t take long to bake brownies. For the final touch, scatter some chocolate chips on the surface as soon as you take the brownies out. The heat will help them nose their way into random pockets of melted goodness. 

Sourdough Peanut Butter Brownie| Egg;ess chocolate brownie recipe

Donโ€™t overmix the batter, and donโ€™t bake them too long. Those are the golden rules for making uber-moist, fudgy, and chewy brownies.ย 

Keep an eye on the oven because overbaking will give the sourdough brownies a dry-ish texture.

I used crunchy peanut butter in the batter and smooth peanut butter on top to give the brownies a layered texture. If you donโ€™t prefer the feel of crunchy peanut butter or donโ€™t have access to it, the smooth version will do in a pinch!

For the chocolate, I exceedingly recommend any good quality option. Thatโ€™s what gives the brownies the deep, earthy taste that pairs so well with peanut butter and adds all the jazz.

Sourdough Peanut Butter Brownie| Egg;ess chocolate brownie recipe

Variations of the recipe:

For vegan sourdough peanut butter brownies, use a plant-based butter or coconut oil. I was short on coconut oil, so I stuck to regular butter. 

If you donโ€™t want eggless sourdough brownies, replace the flax eggs with ordinary eggs. 

To give the brownies a bit more crunch, sprinkle peanuts on top. You can even toss them in the batter, as long as you toast them first. 

In case you donโ€™t have sourdough, use a couple of tablespoons of Greek yogurt to give the brownies the tang. Though truth be told, it is so subtle that my kids didnโ€™t even realize there was sourdough in the brownies!

You can even bake the peanut butter brownies without sourdough or yogurt.

Sourdough Peanut Butter Brownie| Egg;ess chocolate brownie recipe

Serve the sourdough peanut butter brownies

Cut the brownies and serve. Thatโ€™s it. You donโ€™t need to bother with anything else. 

The hardest part will be manfully resisting till the sourdough brownies have cooled. If you try to cut them fresh out of the oven, they will crumble. 

I refrigerated the brownies for a few hours. Chilling them imparted a fudgier texture and more developed flavors, making them even better.

The nutty richness of peanut butter dancing with sourdough discard deepened the dark chocolate bite, saving them from being excessively sweet. Suffice to say the whole was unquestionably greater than the sum of its parts!

But Iโ€™ll leave it up to you on how you enjoy the sourdough peanut butter brownies โ€“ warm, barely cool, or chilled!

Sourdough Peanut Butter Brownie| Egg;ess chocolate brownie recipe

Half the joy of cooking is sharing it with others.ย Thatโ€™sย whyย Iโ€™mย always eager to hear from you. So go right ahead & drop a comment or reach out onย Instagram,ย Pinterest,ย YouTube, orย Facebook. I hope you love these sourdough peanut butter brownies as much as we do!

๐Ÿ“– Recipe

Sourdough Peanut Butter Brownie| Egg;ess chocolate brownie recipe

Sourdough Peanut Butter Brownies

Natasha Minocha
The sourdough peanut butter brownies turned out sublimely moist with a barely perceptible tang. The delicious ribbons of peanut butter running over the fudgy interior made them delectably soft.ย 
5 from 1 vote
Print Recipe Pin Recipe
Prep Time 20 minutes mins
Cook Time 30 minutes mins
Course Dessert
Cuisine American
Servings 16 pieces
Calories 255 kcal

Ingredients
  

  • 2 tbsp Flaxseed powder
  • 6 tbsp Water
  • 1/3 cup Butter
  • 3/4 cup Dark 70% chocolate
  • 1/2 cup Peanut butter, smooth or crunchy, either will work
  • 1 cup Raw sugar
  • 1/2 cup Sourdough discard
  • 1 tsp Vanilla extract
  • 3/4 cup All-purpose flour
  • 1/4 cup Cocoa powder

Toping ( optional)

  • 2 tbsp Peanut butter, preferably smooth
  • 1/4 cup Dark chocolate chips

Instructions
 

  • Combine the flaxseed powder and water in a small bowl. Set aside for 5-10 minutes until the mixture thick and gelatinous.
  • Preheat your oven to 180C. Line a 9" square pan with parchment or butter paper for easier clean up.
  • Combine butter, peanut butter, and chocolate chips in a large bowl. Place this bowl over a pan of just simmering water.
  • Mix the butter, peanut butter, and chocolate until just melted.
  • Take it off the heat. Stir until the mixture is smooth and glossy.
  • Stir in the sugar.
  • Whisk in the flax eggs, sourdough discard, and vanilla extract.
  • Fold in the flour and cocoa powder. Mix until no white streaks remain.
  • Spoon the batter into the prepared pan. Drop spoonfuls of peanut butter on top and make swirls with a wooden skewer or knife.
  • Bake at 180 C for 25-30 minutes. Mine usually gets done in about 28 minutes.
  • Don't over bake this. A skewer inserted in the center should come out with very moist crumbs attached.
  • Scatter some chocolate chips on the brownie, as soon as it comes out of the oven.
  • Let cool for at least 1 hour before cutting into squares. Enjoy!

Nutrition

Serving: 1 ServingCalories: 255kcalCarbohydrates: 28gProtein: 5gFat: 15gSaturated Fat: 7gPolyunsaturated Fat: 2gMonounsaturated Fat: 5gTrans Fat: 0.2gCholesterol: 11mgSodium: 82mgPotassium: 124mgFiber: 3gSugar: 19gVitamin A: 121IUVitamin C: 0.02mgCalcium: 28mgIron: 1mg
Tried this recipe?Let us know how it was!
Sourdough Peanut Butter Brownie| Egg;ess chocolate brownie recipe

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Reader Interactions

Comments

  1. Nicole Grey says

    March 09, 2024 at 9:37 am

    Making this now! With the peanut butter and u using dark chocolate melting wafers? Do I just need chocolate chips for the topping? Could I chop up the wafers and use those? Thank you!!

    Reply
    • Natasha Minocha says

      March 09, 2024 at 10:08 am

      Hi Nicole, I used dark coverture chocolate chips in this recipe. I suppose the chocolate wafers will work too. Happy baking! xx

      Reply
  2. Martha says

    January 07, 2022 at 3:03 am

    I don't understand the 3/4 cup of dark chocolate. Is it broken up chunks measuring 3/4 cup? Chocolate chips? Weight measurement would be helpful. I am considering a substitute of more cocoa and butter. Thanks.

    Reply
    • Natasha Minocha says

      January 09, 2022 at 11:33 am

      Hi Martha, thank you for pointing this out. Going forward I will add measurements in weight as well. For this recipe, you can use 120 gms of chocolate chips. Hope this helps. ๐Ÿ™‚

      Reply
  3. Sarika says

    March 23, 2021 at 3:52 pm

    Allergic to peanut,so can I avoid peanut butter during melting the choco with two butters in double boiler,1/2 cup of peanut butter be replaced with normal butter or some other ingredient.Please guide

    Reply
    • Natasha Minocha says

      March 24, 2021 at 12:50 pm

      Hi Sarika, so you could try subbing the peanut butter with any seed butter like sunflower seed. Else just leave it out of the recipe and continue with the process minus the peanut butter. I think it should work. Since I haven't tried this myself, I'd love to know how this worked out for you. Thank you for stopping by. ๐Ÿ™‚

      Reply
  4. Monica says

    September 01, 2020 at 4:13 pm

    Hi! Instead of sourdough what can be used.

    Reply
    • Natasha Minocha says

      September 01, 2020 at 5:31 pm

      Hi Monica, you could just proceed with the rest of the recipe without the discard or add some Greek yogurt. Hope this helps.:)

      Reply
  5. Ruchika says

    August 24, 2020 at 10:44 pm

    Hi thr..how to mk tht sour dough discard??

    Reply
    • Natasha Minocha says

      August 25, 2020 at 11:35 am

      Hi Ruchika, I have linked the sourdough starter to the blog I followed. Putting it here also for you - https://madteaparty.wordpress.com/2020/03/23/how-to-make-a-sourdough-starter/
      Hope this helps. ๐Ÿ™‚

      Reply
  6. Katrina says

    August 24, 2020 at 6:09 pm

    5 stars
    Can't wait to try these!

    Reply
    • Natasha Minocha says

      August 25, 2020 at 11:23 am

      Thank you, Katrina! Hope you enjoy them as much as we did ๐Ÿ™‚

      Reply
5 from 1 vote

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