These blueberry sourdough muffins are a tasty treat! Soft, fluffy, and packed with juicy blueberries, they are perfect for breakfast or a snack. Plus, the sourdough adds a delightful twist!
Making these muffins is a breeze! I love how the sourdough makes them extra special. The smell of them baking fills the kitchen, and I can’t resist having one warm with butter. Yum!
Key Ingredients & Substitutions
Sourdough Starter: Using an active, unfed sourdough starter brings a tangy flavor that complements the sweet blueberries. If you don’t have sourdough, you could use plain yogurt or buttermilk, but it will alter the flavor slightly, so keep that in mind.
Flour: All-purpose flour works perfectly, giving the muffins a nice structure. If you want a healthier twist, you can substitute half of the flour with whole wheat flour, but be aware it may change the texture.
Milk: While whole milk adds richness, buttermilk makes the muffins even moister. If either isn’t available, any milk will do. Nut milk like almond or oat can work as a dairy-free option too!
Blueberries: Fresh blueberries are fantastic, but frozen ones can be used as well. If you can’t find blueberries, try substituting with raspberries or chopped strawberries for a different berry flavor.
Butter: Unsalted butter gives the muffins a rich taste. If you want a dairy-free option, melted coconut oil or a plant-based butter spread will work well too!
How Can I Get the Perfect Crumb Topping?
The crumb topping is such a fun texture contrast! To make it just right, you’ll want to ensure that you use cold butter. This helps create those nice, crunchy bits once baked. Here’s how to do it:
- Combine flour and sugar in a bowl.
- Dice cold butter into small pieces and add to the mixture.
- Using a fork or pastry cutter, mix until it looks like coarse crumbs – don’t overwork it!
Sprinkle a generous amount on top of each muffin before baking for that delightful crunch!

How to Make Blueberry Sourdough Muffins
Ingredients You’ll Need:
For the Muffins:
- 1 cup active sourdough starter (unfed)
- 2 cups all-purpose flour
- 1/2 cup granulated sugar
- 1/2 teaspoon baking soda
- 1 teaspoon baking powder
- 1/2 teaspoon salt
- 1/2 cup unsalted butter, melted and cooled
- 1/2 cup milk (whole or buttermilk preferred)
- 1 large egg
- 1 teaspoon vanilla extract
- 1 1/2 cups fresh or frozen blueberries
For the Crumb Topping:
- 1/2 cup all-purpose flour
- 1/4 cup granulated sugar
- 1/4 cup unsalted butter, cold and diced
How Much Time Will You Need?
This recipe takes about 15 minutes to prepare and 20 to 25 minutes to bake. Including cooling time, you’ll want to set aside about 45 minutes to enjoy these delicious muffins fresh out of the oven!
Step-by-Step Instructions:
1. Preheat the Oven:
Start by preheating your oven to 375°F (190°C). Line a muffin tin with paper liners or grease it well with butter or non-stick spray to ensure easy removal after baking.
2. Mix the Dry Ingredients:
In a large bowl, whisk together the all-purpose flour, granulated sugar, baking soda, baking powder, and salt. Make sure there are no lumps and everything is evenly combined.
3. Combine the Wet Ingredients:
In another bowl, mix together the active sourdough starter, melted butter, milk, egg, and vanilla extract. Stir well until everything is nicely blended.
4. Combine Wet and Dry Ingredients:
Pour the wet ingredient mixture into the bowl with the dry ingredients. Use a spatula to gently fold everything together. Be careful not to overmix; it’s okay to leave some lumps as it keeps the muffins light and fluffy.
5. Fold in the Blueberries:
Gently fold in the fresh or frozen blueberries. Make sure they’re evenly distributed throughout the batter for delicious blueberry goodness in every bite!
6. Prepare the Crumb Topping:
In a small bowl, mix together the flour and sugar for the crumb topping. Add the cold diced butter and use a fork or your fingers to cut the butter into the dry ingredients until the mixture resembles coarse crumbs.
7. Fill the Muffin Cups:
Fill each muffin cup about 3/4 full with the batter. This will allow room for them to rise. Then, sprinkle a generous amount of the crumb topping over each muffin.
8. Bake the Muffins:
Place the muffin tin in the preheated oven and bake for 20 to 25 minutes. To check for doneness, insert a toothpick into the center of a muffin; it should come out clean when they’re ready.
9. Cool and Enjoy:
Remove the muffins from the oven and let them cool in the tin for about 5 minutes. After that, transfer them to a wire rack to cool completely. This helps them keep their perfect texture!
10. Serve:
Enjoy your muffins warm or at room temperature. You’ll love the delightful tang of the sourdough paired with the sweet bursts of blueberries and the crunchy crumb topping. Perfect for breakfast or a snack anytime!
Can I Use Gluten-Free Flour in This Recipe?
Yes, you can use a gluten-free all-purpose flour blend! Just ensure that it contains a binding agent like xanthan gum, which helps mimic the texture of traditional baked goods.
How Do I Store Leftover Muffins?
To keep your muffins fresh, store them in an airtight container at room temperature for up to 3 days. For longer storage, place them in the fridge for up to a week or freeze them individually wrapped for up to 3 months.
Can I Replace the Blueberries with Other Fruits?
Absolutely! You can swap blueberries for other berries like raspberries or blackberries. Chopped fruits like apples or peaches can also work well, but adjust the quantity to keep the moisture balanced.
What If My Muffins Are Dry?
If your muffins turn out dry, they’re likely overbaked. To avoid this in the future, make sure to check for doneness at the minimum baking time (20 minutes), as every oven can vary slightly. You can also add a little extra milk or fruit puree to the batter for added moisture.



