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Sourdough Discard

Sourdough Discard Zucchini Carrot Bread with Pistachios

You’ll love this light and fluffy Sourdough Discard Zucchini Carrot Bread with pistachios and an icing drizzle for perfect sweetness and texture.

Prep: 15 minutes
Cook: 1 hour
Total: 1 hour 15 minutes
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Recipe Index | Ferment | Sourdough Discard

Sourdough Discard Zucchini Carrot Bread with Pistachios

You’ll love this light and fluffy Sourdough Discard Zucchini Carrot Bread with pistachios and an icing drizzle for perfect sweetness and texture.

Zucchini Carrot Bread Ingredients

This zucchini carrot bread batter is very similar to muffin batter. It’s super easy to mix. The key is to mix all the dry ingredients separately from the wet ingredients before combining. You also want to ensure your wet ingredients are the right temperature before mixing them together!

baked zucchini carrot bread on a cooling rack with icing drizzled on top and dripping down the sides.

The Best Bread Pan for Zucchini Carrot Bread

I picked up this fantastic non-stick bread pan at Whole Foods, and I LOVE it. It’s perfect for any bread. Click here to get one.

For this recipe, it’s best to use a non-stick metal bread pan close to a 9x5x3 dimension. Here are a few more options I’d recommend:

  • Caraway Ceramic Bread Pan
  • USA Pan 1-pound loaf pan
  • Cuisinart Loaf Pan

Should you squeeze the water out of zucchini for bread?

In some recipes, you may need to, but in this recipe, you don’t!

In some quick sweet bread recipes, you might not need to squeeze the water out of zucchini for several reasons:

  1. Moisture Balance: I designed my recipe to accommodate the additional moisture from the zucchini. The zucchini’s moisture content can help create bread that is exceptionally moist and tender.
  2. Recipe Formulation: The amount of dry ingredients (like flour and sugar) in these recipes may be adjusted to account for the extra liquid from the zucchini. This ensures the batter has the correct consistency and the bread bakes properly.
  3. Desired Texture: Some zucchini bread recipes aim for a very moist, almost cake-like texture. The zucchini’s water content contributes to this texture, making the bread soft and tender.
  4. Simplicity and Convenience: Not squeezing the zucchini simplifies the recipe, making it more straightforward and quicker to prepare. 

Should zucchini be peeled before shredding for bread?

No, you shouldn’t peel the zucchini before grating it and incorporating it into the bread. I prefer to leave the skin on for fiber, but also for a pop of color inside the bread.

The zucchini skin is perfectly healthy, especially if you use organic zucchini. So skip the extra work and leave it on! Your bread will be prettier with it.

Don’t Over-Mix the Zucchini Carrot Bread Batter!

When making quick bread one crucial tip is to avoid overmixing the batter. Overmixing can result in dense bread rather than a light and fluffy loaf. The reason behind this lies in the formation of gluten.

Gluten, a protein present in flour, gives structure to baked goods. However, excessive mixing develops gluten strands, leading to a denser texture. To prevent this, gently mix the dry and wet ingredients until just combined, ensuring there are still some lumps and streaks of flour in the batter.

This technique allows the carrot zucchini bread to rise correctly, resulting in a tender crumb and a delightful eating experience.

My other quick bread baking tip is always to use a great, non-stick metal loaf pan.

More Discard Recipes to Try

  • Peach Cobbler Muffins with Brown Sugar Crumble
  • Sourdough Lemon Blueberry Cookies (Blueberry Muffin Cookies)
  • Sourdough Carrot Cake Banana Bread
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Sourdough Discard

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Sourdough Discard Zucchini Carrot Bread with Pistachios

You’ll love this light and fluffy Sourdough Discard Zucchini Carrot Bread with pistachios and an icing drizzle for perfect sweetness and texture. This bread is ideal for any spring or summer get-together. Pair it with coffee or tea for a lovely afternoon snack.

  • Prep: 15 minutes
  • Cook: 1 hour
  • Total Time: 1 hour 15 minutes

Ingredients

  • 2 cups all-purpose flour
  • 1/2 cup sugar
  • 1/2 teaspoon baking soda
  • 1 teaspoon baking powder
  • 2 tablespoons potato starch
  • 1 teaspoon salt
  • 1 teaspoon cinnamon
  • 1/2 tsp ground ginger
  • 1/2 cup crushed pistachios
  • 1/2 cup carrots, grated
  • 1/2 cup zucchini, grated
  • 1/2 cup unsalted butter, room temperature soft
  • 1/2 cup sourdough starter, room temperature
  • 1 teaspoon vanilla extract
  • 1/2 cup whole milk, room temperature
  • 2 eggs, room temperature

Icing

  • 1/3 cup powdered sugar
  • 2–3 teaspoons whole milk
  • crushed pistachios

Instructions

  1. Preheat your oven to 350° F.
  2. Grease a non-stick, 5×9 (1-pound) bread pan with butter.
  3. Grate and measure out the carrot and zucchini.
  4. In a medium-large mixing bowl, combine the flour, potato starch, sugar, baking soda, baking powder, salt, cinnamon, ginger and pistachios.
  5. In a separate bowl, combine the carrots, zucchini, butter, sourdough starter, vanilla, whole milk, and eggs. Mix the wet ingredients until evenly combined.
  6. Gently fold the wet ingredients into the dry ingredients until everything is just combined. Do not over-mix. The batter should be thick, and it’s okay if there are some dry clumps.
  7. Scoop the batter into the bread pan.
  8. Bake for 40-50 minutes total. Rotate the pan halfway through.
  9. While the bread bakes, mix the icing together. Add the milk 1 teaspoon at a time, keeping the icing super thick but able to be drizzled. Crush or chop some pistachios to sprinkle on top the icing.
  10. Allow cooling for about 15 minutes in the pan, then slide the loaf out of the pan onto a cooling rack, allowing it to cool completely.
  11. Drizzle with icing and top with crushed pistachios.

Did you make this recipe?

Please leave a 5-star review below if you loved it! Tag @cultured.guru on Instagram

 

Nutrition information is auto-calculated and estimated as close as possible. We are not responsible for any errors. We have tested the recipe for accuracy, but your results may vary.

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Kaitlynn Fenley Author, Educator, Food Microbiologist
Kaitlynn is a food microbiologist and fermentation expert teaching people how to ferment foods and drinks at home.
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  1. Leah
    04|03|2024

    Could I use corn starch instead of potato starch? Or would you just leave it out?

    Reply
    1. Kaitlynn Fenley
      04|03|2024

      yes! that’s a fine substitute

      Reply
  2. Patty
    04|08|2024

    This sounds good, and I’d like to try it. However, can this, and your other bread recipes, be made with gluten-free flour? I have to be gluten-free.

    Reply
    1. Kaitlynn Fenley
      04|10|2024

      this bread can be made with GF flour, since it is a quick bread recipe. My other sourdough recipes that require kneading and rising cannot be made with GF flour.

      Reply
  3. Tracy
    08|14|2025

    I dont keep potato starch or corn starch around. What is the purpose and is there a non-GMO substitute? I use tapioca flour or arrowroot starch to thicken, but is the purpose of potato starch, too? Thanks for your help!

    Reply

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My favorite topic I teach in our online course is My favorite topic I teach in our online course is called Fermentation Variables. The whole lesson is centered around the fact that there are six main variables that influence the outcome of fermentation.

Here they are, in no particular order:

Sugar
Salt
Oxygen
Acidity
Temperature
Time

Temperature and time depend on each other most closely. 

that means, for all of our foods and drinks that ferment at room temp, things slow way down in the winter cold. 

The fermentation timeline is simply longer when it’s colder (and faster when it’s hotter). The microbes, kind of like us, make things happen slowly in the cold winter. 

I think this is yet another sign from nature that we’re supposed to rest and be gentle and gracious with deadlines, work, and not rush things this time of year. 

Let it be slow, it’ll still be great, it just takes a little more patience and time. 

If you’re looking to start fermentation as an analog hobby in the new year, our courses are 40% off right now! You can use code NEWYEARS at checkout. (Yes, you learn online, but it’s delicious, long form content + the skills are life long). What you learn empowers you to get off the computer/phone and go ferment some delicious foods and drinks. 

Touching cabbage and dough is just as good as “touching grass” lol 

Let me know if you have questions about our courses or just fermentation in general in the comments!

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Yes cooking kills the microbes, but idc. I mean, I Yes cooking kills the microbes, but idc. I mean, I care, but in a “thank you for your service microbes” kinda way. 🫡

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Eating pork and sauerkraut on New Year’s Day is a tradition. And I really do think it brings good luck and prosperity.

Get the recipe on our blog, linked in my profile and in story highlights! 

I’m really looking forward to creating more recipes like this in the new year, to show you all the joys of incorporating ferments into meals and recipes 😌✨ stay tuned! 

#newyear #sauerkraut #fermentation
One Christmas I gifted everyone in my family the N One Christmas I gifted everyone in my family the New York style sourdough bagels and they were thrilled. (The bagels we’re actually way under proofed, but I still gifted them and everyone loved them lol)

You can get the full recipe on my blog! And these can be made with discard and instant yeast or with just active starter.

 All the details are in the 5-star rated recipe on my website. 

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This cookie dough is long-fermented overnight in t This cookie dough is long-fermented overnight in the fridge for the softest, most flavorful, melt-in your mouth sourdough gingerbread cookies.

For Christmas 2025, I tried something new with these cookies. I created a gingerbread sourdough starter to use in this recipe! I made it by feeding some of my established starter a mix that includes molasses and gingerbread spices. I just added the instructions for the gingerbread starter in the notes of my cookie recipe.

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My gingerbread sourdough starter recipe 🎄✨ Like a My gingerbread sourdough starter recipe 🎄✨

Like and save for some fun Christmas sourdough baking! 

I made this up a few days ago to use in my soft sourdough gingerbread cookies. (cookie recipe is in my recipe index on my website!)

#sourdough #gingerbread
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GOOGLE “cultured guru feta” to get my feta recipe any time! You can also use the recipe index linked in my bio! 

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