Sourdough Blueberry Muffins with Crumb Topping
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!

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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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.
- 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.
- Preheatย the oven toย 350ยฐF (176ยฐC). Line a 12-count muffin tin with paper liners or grease generously to prevent sticking.
- 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.
- 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.
- Spoon the mixture evenly into a 12-count muffin tin and press the crumble topping over the muffin batter.
- 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.

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!
- sourdough lemon cake
- sourdough berry sweet rolls
- sourdough banana bread
- chocolate chip sourdough scones
- sourdough pumpkin bread

Sourdough Blueberry Muffins with Crumb Topping Recipe
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
- 8 tablespoons (113 g) butter (melted)
- 2 large eggs
- ยฝ cup (125 g) sourdough starter discard
- 3 tablespoons (45 g) sour cream (or plain Greek yogurt)
- 1 teaspoon (5 g) vanilla extract
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.




Can this be recipe be used for chocolate chip muffins too?
Hi Korryn, here is the link to our chocolate chip muffins: Sourdough Chocolate Chip Muffins
These are soooo delicious! A favorite of my family and I get rave reviews from friends and neighbors whenever I make them for gatherings. So moist and flavorful! I added the juice of the half lemon I had zested and it added a yummy light lemon flavor. Thanks so much for this recipe!!
These are so delicious, and my family is always so impressed when I make them. Thank you for your great recipes!
You are very welcome Alicia ๐
Iโve made these muffins a few times and they are always a huge hit! Can I swap out the blueberries with frozen strawberries or will that affect the moisture/texture in the recipe?
Hi Cassidy, frozen strawberries should be fine as they have a similar moisture content as blueberries.
just made these and they were AMAZING. as many other comments have stated, the mix was extremely dry and I had to add almost an eighth of a cup of water to even be able to incorporate all of the ingredients. I also added the blueberries at the end. but they tasted great! 10/10 will make again!
Thank you for sharing Melissa! I will add a note in the recipe card for this. I think that sometimes it can be dry due to the way each individual measures the ingredients. If using measuring cups, the flour can end up being much more than called for in grams.
Very dry and definitely a bad idea to mix blueberries with the dry ingredients first ๐
Hi Ella, the purpose of adding the blueberries in with the dry mix is to coat them in the flour. This helps the blueberries stay suspended throughout the muffin as opposed to sinking to the bottom. Depending on your climate, it could cause a more dry batter. Next time, try adding a 1-2 tablespoons of milk to get the right consistency and this should do the trick. Let us know if you give this recipe another try!
These are divine!! Crumble is enough for a double batch.
Great flavor and very yummy but mine fell apart. I used soft wheat flour and had to add 6 Tbsp of water to the batter because it was super thick. Maybe those modifications made the difference, but I'm not sure. Any thoughts?
Yes, the change in flour can make a difference.
I made these 3 times and have missed the addition of Milk... Each time the were dry
could this possibly be because I forgot to add the milk?
Yes, most definitely!
TYSM Amanda, 4 is the charm in this case. Still delicious with a slap of butter on them!
The blueberry muffins were excellent. I did need to add more liquid it was very dry at first. I think I would fold in the blueberries at the end next time because my muffins were very blue from all the mixing it took to incorporate dry ingredients!
Thank you for sharing Sue!