Sourdough Blueberry Muffins with Crumb Topping

January 6, 2025 | By Amy Duska If you click on links we provide, we may receive compensation.

This is the best sourdough blueberry muffins recipe! This bakery style blueberry muffin is tender and moist with a thick crumb topping that is crunchy and delicious!

A blueberry muffin in it's wrapper on a plate.


 

We love to use sourdough discard to flavor baked goods. Just like our sourdough morning glory muffins, sourdough banana nut muffins, and our double chocolate sourdough muffins, this blueberry muffin recipe packs a lot of flavor!

Serve these muffins for breakfast, as a midday snack, or even dessert!

This recipe makes 12 large, bakery-style muffins.

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A woman holding a platter of sourdough blueberry muffins.

Step by step instructions

To make the very best, bakery-style muffins you'll need 3 bowls. One for the wet ingredients, one for the dry ingredients, and one for the crumb topping.

  1. Crumb Topping: Prepare the crumb topping by melting the butter and stirring the flour and sugar in with a fork. Make sure the crumbles are kept a large size, so don't over-mix. Set aside.
  2. Preheatย the oven toย 350ยฐF (176ยฐC). Line a 12-count muffin tin with paper liners or grease generously to prevent sticking.
  3. Dry Ingredients: In a large mixing bowlย combineย the flour, sugar, baking soda, baking powder, cornstarch, and salt with a fork.ย Addย the blueberries and toss the mixture to coat.ย Setย aside.
  4. Wet Ingredients: In a medium mixing bowl, whisk the wet ingredients together and then pour into the dry ingredients. Gently stir the mixture until just combined. Don't over-mix the batter.
  5. Spoon the mixture evenly into a 12-count muffin tin and press the crumble topping over the muffin batter.
  6. Bake the muffins for 30-35 minutes or until a toothpick inserted into the center comes out clean.

How to make the best crumb topping

The crumb topping might just be the best part of this recipe! The topping covers the muffins with a layer of buttery sweet and crunchy morsels that take these muffins to another level!

To make the crumble, melt the butter and then use a fork to stir the flour and sugar until it looks like wet chunks. Don't break up the chunks too much, you want them to be large!

After spooning the crumb topping into each muffin, gently press the crumbs into the muffin batter. This will make them adhere to the batter and stay put while the muffins are baking.

A closeup photograph of a plate of sourdough blueberry muffins.

Either fresh or frozen blueberries can be used in this recipe. I like to freeze fresh blueberries before adding them to the muffin batter because they stay more intact during the baking process.

Greek yogurt can be used in place of the sour cream.

Don't have a kitchen scale to measure flour?

Use the scoop and level technique to measure your flour if you do not have a kitchen scale. To do this, use a spoon to fluff up the flour in the bag. Use a spoon to scoop the flour into a measuring cup until it is heaped on top. Take a butterknife and level off the top. This should give you the most accurate measurement for flour.

Because flour is measured by weight in these recipes, if the flour is scooped straight out of the bag with the measuring cup, there will be more flour than is called for in the recipe.

Are you or someone you know looking for a gluten-free flour version? Red's Reality's gluten free blueberry muffins recipe is easy and delicious!

How to store and freeze

Store the muffins at room temperature, loosely covered, or up to 3 days.

To freeze the muffins, allow them to cool completely. Wrap each one in plastic wrap and insert it into a freezer-safe bag. The muffins can be frozen for up to 3 months.

When you are ready to eat them, allow them to thaw at room temperature. Reheat them in the microwave for 20-second intervals until warm. You can also reheat them in the oven at 300ยฐF (149ยฐC) for 6-10 minutes.

Check out more of our delicious sourdough recipes!

A woman holding a tray of sourdough blueberry muffins.

Sourdough Blueberry Muffins with Crumb Topping Recipe

This recipe for sourdough blueberry muffins makes big, bakery style muffins that are tender and moist. They are baked to perfection with a crunchy, sweet crumb topping that is completely irresistible!
Rate this recipe!
4.97 from 548 votes
Print Pin Recipe
Prep Time: 20 minutes
Cook Time: 30 minutes
Servings: 12
Author: Amy Duska

EQUIPMENT

  • 12 count muffin tin

INGREDIENTS

Dry Ingredients

  • 2 cups (240 g) all purpose flour
  • 1 cup (200 g) granulated sugar
  • 2 teaspoons baking powder
  • ยฝ teaspoon baking soda
  • ยฝ teaspoon salt
  • 1 tablespoon corn starch
  • zest of half a lemon
  • 1 cups (150 g) blueberries (fresh or frozen)

Wet Ingredients

Crumb Topping

  • 3 tablespoons (45 g) butter ( melted)
  • ยฝ cup (100 g) granulated sugar
  • ยฝ cup (60 g) all purpose flour

INSTRUCTIONS

  • Crumb topping: Place the melted butter, flour and sugar in a bowl and use a fork to mix until it becomes a coarse crumble. Set aside.
  • Preheat the oven to 350ยฐF (176ยฐC). Line a 12 count muffin tin with paper liners or grease generously to prevent sticking.
  • Dry ingredients: In a large mixing bowl combine the flour, sugar, baking soda, baking powder, corn starch, lemon zest and salt with a fork. Add the blueberries and toss the mixture to coat. Set aside.
  • Wet ingredients: In a medium mixing bowl, whisk all the wet ingredients until smooth. Pour the wet ingredients into the dry ingredients and stir until just combined. (If the batter is too stiff, add 1-2 tablespoons of water or milk to help thin it down.)
  • Divide the batter evenly into 12 muffins and sprinkle the top with the crumble topping. Make sure to press the crumble, gently, on the top of the batter.
  • Bake for 30-35 minutes or until a toothpick inserted into the center of a muffin comes out clean. Let muffins cool in the tin for 10 minutes before removing to cool on a cooling rack.

NOTES

  • Store the muffins loosely covered, at room temperature, for up to 3 days.
  • Freeze the muffins wrapped in plastic wrap, inserted into a freezer-safe bag for up to 3 months.

Nutrition

Serving: 1muffin | Calories: 322kcal | Carbohydrates: 50g | Protein: 4g | Fat: 12g | Saturated Fat: 7g | Cholesterol: 60mg | Sodium: 204mg | Potassium: 120mg | Fiber: 1g | Sugar: 26g | Vitamin A: 391IU | Vitamin C: 1mg | Calcium: 43mg | Iron: 1mg
4.97 from 548 votes (174 ratings without comment)

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602 Comments

  1. 5 stars
    i made these this morning they are excellent. The only changes I made was I used the whole lemon zest I didn't read the recipe correctly but I loved it. My blueberries were large so I added 1/2C more and I added about 1 1/2 T of oil they were perfect. They were tender and perfect.

  2. 5 stars
    My first try using sourdough discard -- these were terrific! I reduced the sugar and used mostly coconut sugar and substituted applesauce and a flax egg for the 2 eggs since we follow a plant based diet. My family loved them!!

  3. 5 stars
    I have made this recipe every week for months now and my family and friends LOVE THEM! So good and so easy! WINNER!

  4. 5 stars
    Perfect sweetness! Eating one leads to another. Since I am on a low fat diet I subbed applesauce for the butter in the crumb topping and it turned out great! Next time I will likely sub applesauce or extra plain almond yogurt for the oil in the muffin.

  5. I make my own milk kefir. Can I use my kefir instead or the sour cream/Greek yogurt? It is more runny but I wonder if it would make the muffins really moist? I have not made them yet..but will be tomorrow ๐Ÿ™‚

    1. Hi Karen, we haven't tested this recipe with almond flour, so we're unsure how it would come out.

  6. 5 stars
    Wow! I usually don't have discard but I accumulated some while trying to reactivate a dried starter. I was starting to feel guilty about waste so found this recipe. Really awesome muffins-thank you!

  7. 4 stars
    I tweaked the recipe slightly. Made these as 6 jumbo muffins. Cut the sugar in half because holy wow 200g is wild, especially with the sugar topping. They came out great! They were still quite sweet, so I might lower the sugar content even more next time. Also, I agree with some other reviews they are just a tad dry. Perhaps adding a bit of neutral oil to the recipe might make a difference with that? I added the recipe to my book though! Always love a good discard option ๐Ÿ™‚ Thank you much!

  8. 5 stars
    I made these tonight and I am blown away! Delicious and the directions were spot on! These will definitely be a part of the baking rotation. I'm very new to sourdough so I'm testing out different discard recipes. This was a definite winner!