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Bite taken out of a chocolate sourdough protein muffin with strawberries, surrounded by whole muffins and fresh strawberries
Sourdough Discard Muffins

Sourdough Chocolate Protein Muffins with Strawberries

These chocolate protein muffins with fresh strawberries and sourdough starter are perfect everyone in the family! Each muffins has 8 grams of protein.

Prep: 10 minutes
Cook: 30 minutes
Total: 40 minutes
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Recipe Index | Ferment | Sourdough Discard | Sourdough Discard Muffins

Sourdough Chocolate Protein Muffins with Strawberries

These chocolate protein muffins with fresh strawberries and sourdough starter are perfect everyone in the family! Each muffins has 8 grams of protein.

Bite taken out of a chocolate sourdough protein muffin with strawberries, surrounded by whole muffins and fresh strawberries

Sourdough Chocolate Protein Muffins

Muffins are not usually long-fermented, but they can be! I don’t long ferment these chocolate protein muffins, but many readers have told me they have successfully fermented the batter overnight in the fridge for easier digestion. You can try fermenting the muffin batter overnight in the fridge before preheating your oven and filling your muffin tin with batter.

The fermentation process that happens with sourdough starters enhances the nutritional profile of many bread products. In sourdough starters, lactic acid bacteria break down gluten, fructans, and phytic acid. This can be particularly beneficial for individuals with gluten or FODMAP sensitivities. If you long ferment the batter for these chocolate strawberry muffins overnight in the fridge and like how it comes out, let me know in the comments!

A mixture of dry ingredients needed for Sourdough Strawberry chocolate protein muffins.
Wet ingredient mixture for sourdough strawberry chocolate protein muffins.

Chocolate Strawberry Muffins

I made these protein-rich chocolate strawberry muffins by adapting my chocolate cherry muffin recipe. It’s one of my favorite late-summer muffin recipes on our blog! Thanks to the addition of chocolate protein powder, these chocolate strawberry muffins have a much higher protein content. Each muffin has 8.1 grams of protein!

Stirring chopped strawberries into a bowl of dry ingredients for sourdough chocolate strawberry muffins
Pouring wet ingredients including sourdough starter and eggs into a bowl of dry muffin ingredients
 Thick strawberry chocolate muffin batter fully mixed in a large white bowl

Why Are My Chocolate Protein Muffins Dry?

Dry protein muffins can result from several factors related to ingredients and baking techniques. Here are some common reasons and tips to help you troubleshoot:

  1. Too Much Flour: Adding too much flour can make muffins dry. For accuracy, measure your flour correctly using the spoon-and-level method or a kitchen scale.
  2. Overmixing: Overmixing the batter can cause too much gluten to develop, making the muffins dense and dry. Mix until just combined to avoid this.
  3. Baking Time: Baking muffins for too long can cause them to dry out. Check them a few minutes before the recipe’s suggested time by inserting a toothpick; it should come out clean but not dry.
  4. Protein Powder Type: Different protein powders absorb moisture differently. Whey protein, for example, can sometimes make baked goods dry. The fresh strawberries used in this recipe add enough moisture to keep the muffins moist, even with protein powder!
  5. Low-Fat Content: The muffins may lack moisture if your recipe uses low-fat ingredients or substitutes. My recipe calls for grass-fed butter, which helps keep the muffins from drying.

How to make protein muffins more moist?

I keep my muffins moist by adding butter and fresh fruit. The combination of fat from the butter and moisture from the strawberries ensures moist muffins, even with protein powder incorporated.

Things You May Need:

12-Well Muffin Pan

12-Well Muffin Pan

Bone Broth Protein Powder

Bone Broth Protein Powder

A product image of a counter top oven showing the front face

Breville Smart Oven Air Fryer Pro

Handmade Mixing Bowls

Handmade Mixing Bowls

French Sourdough Starter

French Sourdough Starter

three sourdough spurtles made of wood

Teakwood Stirring Spatula for Sourdough

Storing Strawberry Chocolate Protein Muffins

Properly storing baked chocolate protein muffins ensures they remain fresh and delicious. Here are some tips on how I like to store them:

  • Room Temperature Storage:
    • Allow the muffins to cool completely.
    • Place them in an airtight container lined with paper towels to absorb excess moisture.
    • Store at room temperature for up to 3-4 days.
  • Refrigeration:
    • If the weather is hot or humid, consider refrigerating the muffins.
    • Store in an airtight container in the fridge for up to one week.
  • Freezing Muffins:
    • Cool muffins completely before freezing.
    • Place the muffins in a freezer-safe bag or container.
    • Label it with the date and freeze it for up to 3 months.
  • Reheating Frozen Muffins:
    • Remove the desired number of muffins from the freezer.
    • Microwave on high for 20-30 seconds or until warm. (remove the paper muffin liner first)
    • Alternatively, preheat the oven to 350°F (175°C) and heat the muffins for 10-15 minutes until warmed.
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Bite taken out of a chocolate sourdough protein muffin with strawberries, surrounded by whole muffins and fresh strawberries
Sourdough Discard Muffins

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

5 from 1 review

Sourdough Chocolate Protein Muffins with Strawberries

These chocolate protein muffins with fresh strawberries and sourdough starter are perfect everyone in the family! Each muffins has 8 grams of protein.

  • Prep: 10 minutes
  • Cook: 30 minutes
  • Total Time: 40 minutes

Ingredients

  • 1 1/2 cups all-purpose flour
  • 1/4 cup cocoa powder
  • 3/4 cup chocolate protein powder*
  • 1/3 cup sugar
  • 1/2 teaspoon baking soda
  • 1 teaspoon baking powder
  • 1 teaspoon salt
  • 1 1/2 cups sliced strawberries, fresh
  • 1/2 cup dark chocolate chips
  • 1/2 cup grass-fed butter, room temperature soft*
  • 1/2 cup sourdough starter, room temperature*
  • 2 teaspoons vanilla extract
  • 1/2 cup whole milk, room temperature
  • 2 eggs, room temperature

Instructions

  1. Preheat your oven to 350° F.
  2. Line a muffin tin with paper liners.
  3. In a medium-large mixing bowl, combine the flour, protein powder, cocoa, sugar, baking soda, baking powder, salt, and strawberries.
  4. In a separate bowl, combine the butter, sourdough starter, vanilla, whole milk, and two eggs. Whisk until combined. (the butter may be clumpy, that’s normal; just mix the wet ingredients as much as possible)
  5. 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 clumps.
  6. Spoon the batter into the muffin tins. Optional— top with extra strawberries
  7. Bake for about 30 minutes total. Rotate the pan halfway through.
  8. Allow cooling for about 15 minutes.

Notes

  • plain or vanilla protein powder works too, but they wont be as chocolatey
  • I use salted butter; if you’re not as much of a salt-lover as I am, use unsalted.
  • You can use sourdough discard from the fridge, or active sourdough starter. Just make sure its room temperature. Either way it’s “discarded” into this muffin recipe since it is not used for rise.

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. Tarrah
    10|27|2025

    Great! We all loved them!

    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. 

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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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