Sourdough Blueberry Muffins with Crumb Topping
Bakery-style sourdough blueberry muffins made with tangy discard, juicy berries, and a buttery crumb topping. Soft, moist, and perfect for breakfast or brunch.
Why You Will Love These Sourdough Blueberry Muffins
If you have a jar of sourdough discard sitting in your fridge wondering what its purpose in life is, this is it. These sourdough blueberry muffins are soft, tender, bursting with juicy berries, and finished with a buttery crumb topping that turns an everyday muffin into something bakery worthy. This is one of the easiest ways to use up sourdough discard, and honestly, once you taste the subtle tang it brings to the crumb, you may start saving your discard just for this recipe.
Whether you are searching for a sourdough discard blueberry muffin recipe that actually works on the first try, or you are just wondering how to make sourdough blueberry muffins without a long fermentation process, this recipe has you covered. No overnight rise required, though we will show you how to do that too if you want to plan ahead.
Before we get baking, a few tools and ingredients really do make a difference in how these muffins turn out. A sturdy muffin tin helps the crumb topping bake evenly instead of sliding off, and good quality vanilla extract and fresh blueberries make the flavor pop.
What Makes This Recipe Different
Most sour dough discard blueberry muffins either taste flat or turn out dense because the discard is not balanced properly with the other wet ingredients. Here, we keep the ratio of discard to butter and eggs just right so the muffins stay light and fluffy instead of gummy. The lemon zest is optional, but it brightens the blueberries beautifully if you want to lean into a sourdough lemon blueberry muffin direction.
Chef's Tip: Toss your blueberries in a spoonful of flour before folding them into the batter. This coats the berries and keeps them suspended throughout the muffin instead of sinking straight to the bottom.
The Secret to Bakery Style Muffin Tops
The trick to those tall, domed muffin tops you see at coffee shops is a hot oven start. Baking at 425 degrees for the first five minutes gives the batter a quick burst of heat that makes it rise fast, then dropping the temperature finishes the bake gently so the inside cooks through without burning the crumb topping.
Speaking of the crumb topping, do not skip it. It is just flour, brown sugar, cinnamon, and cold butter rubbed together into little clusters, but it adds a crunchy, buttery contrast to the soft muffin underneath that makes these feel like a real treat.
A Note on Sourdough Discard
You do not need an active, bubbly starter for this recipe. Sourdough discard straight from the fridge, even if it looks a little flat and hungry, works perfectly here. This is what makes it such an easy homemade sourdough blueberry muffin option for anyone who bakes bread regularly and always has extra discard on hand.
Ready to make it? Here is the full step-by-step recipe:
Sourdough Blueberry Muffins with Crumb Topping
Bakery-style sourdough blueberry muffins made with tangy discard, juicy berries, and a buttery crumb topping. Soft, moist, and perfect for breakfast or brunch.
Ingredients
- 2 cups all-purpose flour, spooned and leveled
- 3/4 cup granulated sugar
- 1 1/2 tsp baking powder
- 1/4 tsp baking soda
- 1/2 tsp salt, fine sea salt
- 1 cup sourdough discard, unfed, straight from the fridge is fine
- 1/2 cup unsalted butter, melted and slightly cooled
- 2 large eggs, room temperature
- 1/4 cup whole milk, room temperature
- 1 tsp vanilla extract
- 1 tbsp lemon zest, from about 1 large lemon, optional but recommended
- 1 1/2 cups fresh blueberries, tossed in 1 tbsp flour to prevent sinking
- 3/8 cup all-purpose flour, for crumb topping
- 1/4 cup brown sugar, packed, for crumb topping
- 3 tbsp unsalted butter, cold and cubed, for crumb topping
- 1/4 tsp cinnamon, for crumb topping, optional
Instruction
Preheat the oven to 425 degrees F (220 degrees C) and line a 12 cup muffin tin with paper liners.
Make the crumb topping first: in a small bowl, mix the flour, brown sugar, and cinnamon, then cut in the cold butter with a fork or your fingers until the mixture looks like coarse, pebbly sand. Set aside in the fridge while you make the batter.
In a large bowl, whisk together the flour, sugar, baking powder, baking soda, and salt.
In a separate bowl, whisk the sourdough discard, melted butter, eggs, milk, vanilla, and lemon zest until smooth.
Pour the wet ingredients into the dry ingredients and fold gently with a spatula just until no dry streaks remain. Do not overmix, a few lumps are fine.
Toss the blueberries with 1 tablespoon of flour, then gently fold them into the batter.
Divide the batter evenly among the muffin cups, filling each about three quarters full.
Sprinkle the chilled crumb topping generously over each muffin, pressing lightly so it adheres.
Bake at 425 degrees F for 5 minutes, then, without opening the oven, reduce the temperature to 350 degrees F (175 degrees C) and bake for another 15 to 17 minutes, until a toothpick inserted in the center comes out clean.
Cool the muffins in the tin for 5 minutes, then transfer to a wire rack to cool slightly before serving.
Equipment
- 12 cup muffin tin
- Paper muffin liners
- Large mixing bowl
- Whisk
- Rubber spatula
- Wire cooling rack
Notes
Make It Overnight
Want overnight sourdough blueberry muffins ready to pop in the oven first thing in the morning? Mix the batter the night before, but hold off on folding in the blueberries and making the crumb topping. Cover the batter tightly and refrigerate overnight. In the morning, fold in the blueberries, whip up the crumb topping, and bake as directed. The cold batter may need an extra minute or two in the oven.
Storage and Reheating
These muffins keep beautifully. Store them in an airtight container:
- At room temperature for up to 2 days
- In the fridge for up to 5 days
- In the freezer for up to 3 months
To reheat, a quick 10 to 15 seconds in the microwave brings back that just baked softness, especially nice on a chilly morning with a cup of coffee.
Fun Variations to Try
- Swap the blueberries for raspberries or diced strawberries
- Add a streusel of chopped pecans for extra crunch
- Stir in extra lemon zest and a touch of lemon juice for a brighter, tangier sourdough lemon blueberry muffin
- Drizzle with a simple powdered sugar glaze once cooled
Chef's Tip: Let the muffins cool for at least 5 minutes in the tin before transferring them to a rack. This gives the crumb topping a chance to set so it does not crumble off when you move them.
However you customize them, these muffins are proof that sourdough discard deserves a permanent home in your baking rotation, not just your bread.
