Healthy sourdough chocolate zucchini muffins are a rich, moist, and delicious way to enjoy the summer bountyChocolate sourdough batter is mixed with chocolate chips, shredded zucchini, and hints of orange to make the best sourdough muffins.

sourdough chocolate zucchini muffins on a countertop with sliced oranges

Every year, I plant a lot of zucchini, forgetting how prolific zucchini truly is. 

You know the saying, โ€œIโ€™ve got corn coming out of my earsโ€? Well, that is truly how zucchini grows.

So, what is one to do when life gives you tons of zucchini? Make double chocolate zucchini muffins, of course!

All summer long, you will find me in the kitchen baking delicious sourdough fruit desserts likeย blueberry,ย peach, and even strawberry cream cheese cobbler.ย 

Itโ€™s time to create a veggie dessert!

I love this recipe. It contains healthy fats, unrefined coconut sugar, and even has the added benefit of vegetables. This is the kind of chocolate you can eat at any point through the day with rock solid justification.ย 

5 sourdough chocolate zucchini muffins on a black countertop with white flowers spread throughout

Why you will love this recipe:

  • So much delicious flavor. Chocolate sourdough muffin batter, with chocolate chips and a hint of orange, truly is a wonderful combination.
  • Adding zucchini not only adds moisture, but it is also a great way to get picky kids to eat their veggies. While my kids will usually eat just about anything, I know many moms that struggle with getting their kids to eat any type of veggie. Putting it in muffins and covering it with chocolate batter and chocolate chips is sure to help.
  • Itโ€™s a great way to use up all that extra squash from your summer harvest or maybe that one squash that accidentally got away from you (aka it is huge and not good for sautรฉing). You could even make multiple batches and freeze them so you can enjoy them long after the summer is over.
chocolate zucchini muffins with the muffin liner peeled off, orange slices around the muffin and more muffins in the background

Tips For Making Sourdough Chocolate Zucchini Muffins

  • Bake the muffins in the upper third of the oven for a better rise.
  • No need to peel the zucchini. Just shred it on a box grater. You also donโ€™t need to drain any water off the zucchini. You want the extra moisture in these muffins.
  • Make sure not to over-mix the batter, otherwise they will be dense and tough.
  • Let the batter rest in the fridge for at least an hour, if you have time, as this will really help in getting domed muffin tops.
  • Turn your oven light on and watch as the muffins rise. Once you have beautiful, domed tops, turn the temperature down to 350 degrees.ย 
  • If you forgot to take the eggs out of the fridge ahead of time, you can bring them up to room temperature quickly by setting them in a bowl of very warm water for 5-10 minutes.
  • If you prefer chocolate muffins with no orange flavor, you can omit the orange zest and juice and just increase the amount of buttermilk by two tablespoons.

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overhead photo of zucchini chocolate muffins on a blue and white stripped table cloth with orange slices spread about the muffins
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Tools you may need:

Muffin tin – I love this cast iron one.

Silicon muffin liners

Box grater

Measuring cups and spoons

Large bowl

Citrus juicer

sourdough chocolate zucchini muffins spread out on a black countertop with white flowers and a white napkin on the countertop

How To Make Sourdough Chocolate Zucchini Muffins

  1. Preheat the oven to 425 degrees. Grease muffin tins well or line with paper liners.
  2. In a medium bowl, whisk together the spelt flour, cocoa powder, salt, baking powder, and baking soda.
  3. In a separate large bowl, whisk together melted coconut oil and coconut sugar, then incorporate one room temperature egg at a time.
  4. Stir in grated zucchini (no need to peel it or drain any water from it), orange zest, orange juice, sourdough starter, and buttermilk.
  5. Gradually add dry ingredients to the wet ingredients and mix until just combined.ย 
  6. Stir in chocolate chips.
  7. If you have time, allow mixture to rest in the fridge for one hour, as this will give the muffins a better rise.
  8. Distribute batter into the prepared muffin wells. If desired, top muffins with a few chocolate chips.ย 
  9. Bake in a preheated oven at 425 for 5-6 minutes, then drop the oven temperature to 350 (no need to open the oven door) and continue to bake for 13-15 minutes (total approx bake time is 20 minutes).
  10. Test muffins with a cake tester or knife.
  11. Allow to cool.
chocolate zucchini muffins placed on a white countertop with orange slices around the muffins

Do zucchini muffins need to be refrigerated?

No. They will last about three days in an airtight container at room temperature. They will also freeze well for months.

How do you grate zucchini?

Take the box grater and gently press the zucchini down the medium-sized grates. Bring the zucchini back up to the top, pushing against and down the grates. Keep repeating until there is just a little bit of the zucchini left or until the desired amount is achieved.

Can this recipe be long fermented?

Normally, I always long ferment any sourdough recipe. This recipe is more of a quick bread and isn’t fermented. I have not personally tried it, but you could try to long-ferment these muffins two ways:

Mix the recipe together (omitting the leaveners and zucchini) and store it in the fridge for 1-3 days (the latter if you have a more difficult time digesting grains). After fermentation, add leaveners and shredded zucchini (I recommend doing this in a stand mixer). Bake as directed.

You may also be able to mix together flour, sugar, sourdough starter, melted coconut oil, buttermilk, orange juice, and cocoa powder together. Cover and allow to ferment for 8-24 hours. The next day, add shredded zucchini, salt, and leaveners and mix until combined well (I recommend using a stand mixer). Bake as directed the next day.

Find More Of Our Favorite Sourdough Recipes:

If you make this recipe and love it, I would love if you gave it 5 stars! Tag me on Instagram @farmhouseonboone with your delicious creation.

Sourdough Chocolate Zucchini Muffins

4.62 from 107 votes
Double chocolate zucchini muffins made with sourdough starter are a delightful and delicious treat.
Prep: 15 minutes
Cook: 20 minutes
Additional Time: 1 hour
Total: 1 hour 35 minutes
Servings: 12 muffins
sourdough chocolate zucchini muffins spread out on a black countertop with white flowers and a white napkin on the countertop
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Ingredients 

Dry Ingredients:

  • 1 1/2 cups spelt flour
  • 3 tablespoons cocoa powder
  • 1/2 teaspoon salt
  • 1 1/2 teaspoons baking powder
  • 1 teaspoon baking soda

Wet Ingredients:

  • 1/3 cup coconut oil, melted
  • 3/4 cup coconut sugar
  • 2 large eggs
  • 1 1/2 cups zucchini, 150g
  • Zest from 1 large orange
  • 2 tablespoons orange juice
  • 1/2 cup sourdough starter
  • 1/4 cup buttermilk
  • 1/2 cup heaping chocolate chip , (plus extra to top the muffins if desired)

Instructions 

  • Preheat the oven to 425 degrees. Grease muffin tins well or line with paper liners.
  • In a medium bowl, whisk together the spelt flour, cocoa powder, salt, baking powder and baking soda.
  • In a separate large bowl, whisk together melted coconut oil and coconut sugar and then incorporate one room temperature egg at a time.
  • Stir in grated zucchini, orange zest, orange juice, sourdough starter, and buttermilk.
  • Gradually add dry ingredients to the wet ingredients and mix until just combined.
  • Stir in chocolate chips.
  • Allow mixture to rest in the fridge for one hour, as this will give the muffins a better rise (optional.
  • Distribute batter into the prepared muffin wells. If desired, top muffins with a few chocolate chips.
  • Bake in a preheated oven at 425 for 5-6 minutes, then drop the oven temperature to 350, and continue to bake for 13-15 minutes (total approx bake time is 20 minutes).
  • Test muffins with a cake tester or knife.
  • Allow to cool.

Notes

  • No need to peel the zucchini. Just shred it on a box grater. You also donโ€™t need to drain any water off the zucchini. You want the extra moisture in these muffins.
  • Make sure not to over-mix the batter, otherwise they will be dense and tough.
  • Let the batter rest in the fridge for at least an hour, if you have time, as this will really help in getting domed muffin tops.
  • If you forgot to take the eggs out of the fridge ahead of time, you can bring them up to room temperature quickly by setting them in a bowl of very warm water for 5-10 minutes.
  • If you prefer chocolate muffins with no orange flavor, you can omit the orange zest and juice and just increase the amount of buttermilk by two tablespoons.

Nutrition

Calories: 212kcal | Carbohydrates: 29g | Protein: 4g | Fat: 10g | Saturated Fat: 7g | Polyunsaturated Fat: 0.3g | Monounsaturated Fat: 1g | Trans Fat: 0.003g | Cholesterol: 32mg | Sodium: 280mg | Potassium: 105mg | Fiber: 3g | Sugar: 12g | Vitamin A: 90IU | Vitamin C: 4mg | Calcium: 50mg | Iron: 1mg

Nutrition information is automatically calculated, so should only be used as an approximation.

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4.62 from 107 votes (99 ratings without comment)

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61 Comments

  1. Ashton says:

    Another awesome recipe!! This one is very versatile, which I love! I’ve been meaning to leave a review & comment, but I’m glad I waited because I can now say this recipe works great:

    – As is, but subbing einkorn flour for spelt
    – Omitting orange components
    – Omitting chocolate chips AND orange components
    – Making the night before, and fermenting overnight in the fridge (I prefer to let it sit out for a bit to loosen up, and add the baking soda and powder in at that time so it incorporates more easily).

    This is a great breakfast to prep the night before and stick in the oven while doing morning chores outside.

  2. Kacy says:

    I never write reviews, but i was laying in bed thinking about how yummy these turned out and felt like i needed to review it..haha. Thanks Lisa for another great recipe!! I went on vacation and came back to an extremely large zucchini in my garden so Iโ€™ve been trying to find ways to put it into everything! These are perfect.

    I wasnโ€™t feeling the orange (i will have to try that too!) so just omitted it, and added a touch more milk like you recommended ๐Ÿ™‚ and used AP flour because thatโ€™s what i had on hand. 10/10

    1. Lisa says:

      Thank you for the kind words! So glad you enjoyed these muffins!

  3. April says:

    I have frozen shredded zucchini in my freezer. Can I use this? Should I drain a little of the liquid off since freezing it produces more liquid? Thank you!

    1. Lisa says:

      Yes, you can use it! You may want to drain some of the liquid. You do want a little liquid for this recipe, but sometimes frozen has a lot more than needed.

  4. Bryanne Lavoie says:

    My friend gave me some sourdough starter. I found your website and tried this recipe. These muffins are amazing!!! Everyone in the family loves them. I look forward to trying more of your recipes because I’m new to sourdough baking.

    1. Lisa says:

      That’s wonderful! So glad you enjoyed the recipe and hope you find others you like! Good luck with your sourdough journey!

  5. Rebecca Pearce says:

    This was absolutely delicious!

    1. Lisa says:

      That is great to hear.

  6. Christine Ross says:

    These are sooooo good! ๐Ÿ˜another winner. I used 1/4 cup brown sugar with the coconut sugar just cause I ran out. Also used organic Greek yogurt for a little extra protein. Perfect

  7. Gina Sperry says:

    Has anyone made this as bread in a loaf pan? Iโ€™m trying to do less dishes. ๐Ÿ˜‚๐Ÿ˜‚

  8. Kim forgie says:

    Iโ€™ve tried doing the over night ferment with the flour and liquid and have had no success,,,,ended up throwing it out ,, does not rise and is raw in the middle,,

  9. Ellie says:

    This was a great recipe. I added more zucchini – almost 2 and a half cups and they came out great. Very moist! Good job, Lisa.

  10. Patricia A Dudley says:

    These were moist and delicious