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A close-up of freshly baked blueberry protein muffins, made with sourdough discard, sitting in a muffin tin. One muffin is torn in half, revealing a soft, fluffy interior packed with blueberries.
Sourdough Discard

Low-Sugar Blueberry Protein Muffins with Sourdough Discard

Moist, rich, and bursting with flavor—the perfect baking recipe for blueberry season. Enjoy these blueberry protein muffins for breakfast, a snack, or dessert.

Prep: 10 minutes
Cook: 30 minutes
Jump to Recipe Rate Recipe

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Ferment | Sourdough Discard

Low-Sugar Blueberry Protein Muffins with Sourdough Discard

Moist, rich, and bursting with flavor—the perfect baking recipe for blueberry season. Enjoy these blueberry protein muffins for breakfast, a snack, or dessert.

A close-up of freshly baked blueberry protein muffins, made with sourdough discard, sitting in a muffin tin. One muffin is torn in half, revealing a soft, fluffy interior packed with blueberries.

Low-sugar Blueberry Protein Muffins

If you love baking with sourdough starter and are looking for a creative way to use your sourdough starter discard, we have a delightful treat for you: Blueberry Protein Muffins with Sourdough Discard!

These muffins include fresh, juicy blueberries and organic whey protein powder for delectably nutritious muffins.

A close-up of freshly baked blueberry protein muffins, made with sourdough discard, sitting in a muffin tin. One muffin is torn in half, revealing a soft, fluffy interior packed with blueberries.

Blueberry Protein Muffins with Sourdough Discard

Sourdough is a beloved ingredient in bread-making and offers numerous health benefits.

The fermentation process used to create sourdough bread enhances its nutritional profile. Sourdough is easier to digest than traditional yeast bread. In sourdough, lactic acid bacteria break down gluten, fructans, and phytic acid. This can be particularly beneficial for individuals with gluten or FODMAP sensitivities.

Muffins are not usually long-fermented, but they can be! I don’t long ferment these blueberry sourdough 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.

Don’t Over-Mix These Blueberry Protein Muffins

One crucial tip when making these blueberry protein muffins is to avoid overmixing the batter. Overmixing can result in dense muffins rather than light and fluffy protein muffins, and the reason behind this is 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 they are just combined, ensuring there are still some lumps and streaks of flour in the batter.

This technique allows the muffins to rise correctly, resulting in a tender crumb.

My other muffin baking tip is always to use a thin metal aluminum muffin tin with paper liners. A metal muffin tin works way better than a silicone muffin pan.

Why Are My 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 blueberries used in this recipe add enough moisture to keep the muffins moist, even with protein powder.
  5. Low-Fat Content: If your recipe uses low-fat ingredients or substitutes, the muffins may lack moisture. My recipe calls for grass-fed butter, which helps keep the muffins from drying out.

What is the Secret to Moist Muffins?

Adding fruit into muffins is the secret to achieving a moist and tender texture that keeps these baked treats irresistibly soft.

Fruits like blueberries, apples, and cherries naturally contain high water content, which releases moisture as the muffins bake. This moisture infusion prevents the muffins from drying out and enhances their softness. Moreover, fruits contribute to the flavor profile, adding a fresh, natural sweetness that complements the other ingredients.

The natural sugars in blueberries also caramelize during baking, creating pockets of juicy, flavorful bites within the muffin. The pectin found in fruits is a natural thickener, contributing to the moist, luscious crumb. Incorporating fruit elevates the taste and ensures that each muffin is tender and deliciously moist.

A freshly baked blueberry protein muffin, made with sourdough discard, is torn in half on crinkled parchment paper, revealing a moist, fluffy crumb filled with juicy blueberries.

Storing Blueberry Protein Muffins

Storing baked blueberry protein muffins properly ensures they remain fresh and delicious. Here are some tips on how to store them effectively:

  • Room Temperature Storage:
    • Allow 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 muffins.
    • Store in an airtight container in the fridge for up to one week.
  • Freezing Muffins:
    • Cool muffins completely before freezing.
    • Place 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.
    • Alternatively, preheat the oven to 350°F (175°C) and heat muffins for 10-15 minutes until warmed.

More Sourdough Discard Muffin Recipes

  • Zucchini Blueberry Muffins with Sourdough Discard
  • Double Chocolate Cherry Muffins with Sourdough Discard
  • Oatmeal Chocolate Chip Muffins with Sourdough Discard

Things You May Need:

12-Well Muffin Pan

12-Well Muffin Pan

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

Breville Smart Oven Air Fryer Pro

Bone Broth Protein Powder

Bone Broth Protein Powder

Handmade Mixing Bowls

Handmade Mixing Bowls

three sourdough spurtles made of wood

Teakwood Stirring Spatula for Sourdough

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A close-up of freshly baked blueberry protein muffins, made with sourdough discard, sitting in a muffin tin. One muffin is torn in half, revealing a soft, fluffy interior packed with blueberries.
Sourdough Discard

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

5 from 8 reviews

Low-Sugar Blueberry Protein Muffins with Sourdough Discard

A high-protein sweet snack that uses up some sourdough discard? Sign us up! Moist, rich, and bursting with flavor—the perfect baking recipe for blueberry season. Enjoy these blueberry protein muffins for breakfast, a snack, or dessert.

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

Ingredients

  • 1 3/4 cups all-purpose flour
  • 3/4 cup plain whey protein powder
  • 1/2 cup brown sugar, packed
  • 1/2 teaspoon baking soda
  • 1 teaspoon baking powder
  • 1 teaspoon salt
  • 2 cups fresh blueberries, slightly mashed
  • 1/2 cup grass-fed butter, room temperature soft
  • 1/2 cup sourdough starter, room temperature
  • 2 teaspoons vanilla extract
  • 1/3 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. lightly mash the blueberries with fork.
  4. In a medium-large mixing bowl, combine the flour, protein powder, sugar, baking soda, baking powder, salt, and blueberries.
  5. In a separate bowl, combine the butter, sourdough starter, vanilla, whole milk, and two eggs. Whisk until 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 clumps.
  7. Spoon the batter into the muffin tins. Optional— top with extra blueberries
  8. Bake for about 30 minutes total. Rotate the pan halfway through.
  9. Allow cooling for about 15 minutes.

Notes

  • If you do not have protein powder, you can still make these muffins!— Use 2 cups of flour total in the recipe, and omit the protein powder.

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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hey i’m kaitlynn, i’m a microbiologist and together with my husband jon we are cultured guru.

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  1. Amy
    08|31|2024

    These were delicious! I added juice of 1 lemon + zest to add some zing to it.

    Reply
    1. Kaitlynn Fenley
      09|03|2024

      love that! Blueberry and lemon are fantastic together!

      Reply
  2. Monica
    10|15|2024

    These turned out fantastic!!! My one year old loves them too! They are perfect- crispy on the outside but light and soft on the inside. New favorite blueberry muffin recipe!

    Reply
  3. Julia
    01|12|2025

    Delicious! These muffins have a wonderful crunchy top and are soft and fluffy inside. I fermented the batter overnight in the fridge and they baked great. I also used frozen blueberries from last years’ harvest (just let blueberries thaw at room temp and don’t include excess liquid).

    Reply
    1. Kaitlynn Fenley
      01|13|2025

      Thanks for leaving a review! I’m glad to hear the overnight batter ferment worked great for you too!

      Reply
      1. Julia
        01|29|2025

        I made these again, but used bananas instead of blueberries and 1/2 whole wheat flour. Still delicious!

        Reply
  4. Brittany
    01|15|2025

    I used vanilla protein powder and only 1 teaspoon vanilla extract to its not too vanillily. Came out perfect 👌 they were so moist and I dint feel bad about eating them. I baked a handful for the kids breakfast to grab and go!

    Reply
    1. Kaitlynn Fenley
      01|16|2025

      Thank you so much for leaving a review and for trying my recipe!

      Reply
  5. Morgan
    01|20|2025

    These turned out so great! Loved how they were crispy on the stop but still soft and chewy on the inside. I also used a plant based protein powder and fermented them overnight and they still turned out great

    Reply
    1. Kaitlynn Fenley
      01|20|2025

      Thank you for leaving a review! I’m thrilled to hear you loved the recipe.

      Reply
  6. Sabre
    01|27|2025

    Easy recipe. I use about 1/2 cup pea protein 1/4 cup collagen powder. Leave out some of the flour and add hemp and flax seeds. I used thawed frozen blueberries. Added a ripe mashed banana to the wet ingredients. Also added about 1/2 cup cottage cheese. Dash of cinnamon. Let ferment in the fridge 8-10 hours. Better rise if the batter comes to room temp before baking. Works well for mini muffins too baked for about 15 min.

    Reply
  7. Anonymous
    01|28|2025

    this is under sourdough discard, but the recipe calls for sourdough starter…so does it have to be active sourdough starter or can it be discard i have in the fridge? can you make these without the protein powder?

    Reply
    1. Kaitlynn Fenley
      01|28|2025

      You can use active starter or discard from your fridge. Both work. Either way the starter is “discarded” into the recipe because it is not used for rise. You can uses 2 cups flour total and leave out the protein powder.

      Reply
  8. Anonymous
    01|29|2025

    They turned out great. It made 18 muffins so I’m not sure what went wrong, but I’m not mad.

    Reply
    1. Kaitlynn Fenley
      01|30|2025

      hmm… maybe your muffin tin is a different size than mine!

      Reply
  9. Saskia
    03|08|2025

    We love these! I feed my starter weekly and make these atleast every other week. They really are delish.

    Reply
    1. Kaitlynn Fenley
      03|13|2025

      Glad to hear y’all are loving the muffins! Thanks for leaving a review!

      Reply
  10. Parker
    04|10|2025

    Made these last week, and they were so good!! For my next batch, I wanted to try with chocolate chips – do you think this will significantly affect how moist they are?

    Reply
    1. Kaitlynn Fenley
      04|11|2025

      yes! Without the blueberries they will be quite dry. If you want to do chocolate chips, sub the blueberries for some chopped banana maybe? Fresh fruit is necessary.

      Reply
  11. Katherine
    05|20|2025

    Could I add a couple extra egg whites to up the protein? Would that make the batter too runny?

    Reply
    1. Kaitlynn Fenley
      05|20|2025

      It will definitely make the batter wetter, which will change the final texture. I’d say just adjust the egg. You can do 4 servings of egg white instead of two eggs. I haven’t tested the recipe like that though, so I cant know for sure how that will come out.

      Reply

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sourdough discard 🤝 cottage cheese combined tw sourdough discard 🤝 cottage cheese

combined two of the best fermented foods to make the best pancakes. And yes, you can ferment the batter overnight in the fridge for easier digestion. 

My recipe makes 15 pancakes and each serving of 3 pancakes had 17 grams of protein! 

Get the recipe from my recipe index, linked in my profile✨

#sourdough #cottagecheese #pancakes #fermentation
It can suppress overgrowth of Candida albicans, wh It can suppress overgrowth of Candida albicans, while boosting good bacteria in your gut! 

Roasting garlic increases beneficial garlic compounds like diallyl sulfide and diallyl disulfide — or DADS, for short. Both of these compounds have been studied for their anti-inflammatory (anti-cancer), antioxidant, and antifungal properties.

It’s definitely a sauerkraut you should keep in your rotation.

To get the recipe google “garlic sauerkraut.” and you’ll see mine it’s the first one.

Sources:
PMC8777027 (Diallyl Disulfide (DADS) Ameliorates Intestinal Candida albicansInfection by Modulating the Gut microbiota and Metabolites and Providing Intestinal Protection)

https://doi.org/10.3390/fishes9100401 (diallyl disulfide (DADS) shows a substantial increase, with concentrations rising from 1.6 mg/g in non-fermented garlic to 4.8 mg/g in its fermented counterpart, suggesting enhanced bioactivity through fermentation)
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I know, I know, I’m making everything with cottage cheese right now. But how can I not? Cottage cheese is one of the most protein-rich fermented foods.

If you love ice cream and cheesecake-like flavor, you’ll love this recipe. it’s high in protein, requires only four simple ingredients, and does not require churning. So, you do not need an ice cream maker!

A half-cup serving of this ice cream has 12 grams of protein, making it a healthy and balanced sweet snack. Get the recipe from the recipe index linked in my profile. 

#cottagecheese #icecream
Baked ✨Cottage Cheese✨ Queso Dip It’s crea Baked ✨Cottage Cheese✨ Queso Dip 

It’s creamy, cheesy, and packed with protein, but with fewer calories thanks to the cottage cheese base. And it’s only 6 ingredients +toppings! 

I love it topped with cilantro, diced tomatoes, onions and fresh jalapeños! 

Get the full recipe from my recipe index, linked in my bio. 

#queso #cheese #cottagecheese
Why do you add water to sauerkraut? To that I as Why do you add water to sauerkraut? 

To that I ask: who told y’all you can’t add water to sauerkraut? 

Adding water standardizes my recipes, making sure everyone gets enough brine, regardless of cabbage variability. 

Google “cultured guru sauerkraut” and you’ll see my recipes! 

#sauerkraut #fermentation
Bok choy is similar in texture to Napa cabbage and Bok choy is similar in texture to Napa cabbage and lovely for fermentation. 

Since bok choy and all cabbages grow low and very close to the soil, their microbiome composition is wonderful! This makes all cabbages easy vegetables to ferment, and fermented bok choy is one of my absolute favorites.

Google fermented bok choy and you’ll see my recipe, it’s the first one. ☝🏼 #cabbage #fermentation #homestead 

Ps. I used some tiny weck jar lids for weights in my bigger weck jar and it worked great!
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