Sourdough Blueberry Muffins

Last Sunday morning, my sourdough discard had multiplied in the fridge again, staring at me every time I reached for the milk. I was craving something baked but not the usual bread routine. Those lonely blueberries in the fruit drawer caught my eye, and suddenly I was rummaging for the muffin tin before the coffee even finished brewing.

My neighbor Sarah stopped by right as they came out of the oven, her nose practically pressed against the screen door. She took one home for her kids and texted me an hour later asking for the recipe. Now she keeps sourdough starter on her counter just for these muffins.

Ingredients

• 2 cups all purpose flour: The structure here matters, so spoon and level instead of scooping directly or you will end up with dense muffins
• 1/2 cup granulated sugar: This hits the sweet spot where the blueberries shine without being cloying
• 1/2 tsp salt: Do not skip this, it makes all the other flavors pop
• 1 tsp baking powder: Works with the baking soda for that perfect dome top
• 1/2 tsp baking soda: Essential because the sourdough is acidic and needs this lift
• 1 cup sourdough starter: Active or discard both work here, just bring it to room temperature first
• 2 large eggs: Room temperature eggs incorporate so much better into the batter
• 1/2 cup unsalted butter melted: Let it cool slightly so it does not scramble your eggs when you mix
• 1/2 cup whole milk: I have used oat milk in a pinch and it still turns out lovely
• 1 tsp vanilla extract: Use the good stuff if you have it, it makes a difference
• 1 1/2 cups blueberries: Fresh are ideal but frozen work perfectly, just keep them frozen until folding in
• Lemon zest: This brightens everything and cuts through the richness

Instructions

Preheat your oven:

Get it to 375 degrees and line your muffin tin while the oven does its thing

Whisk the dry ingredients:

Combine flour, sugar, salt, baking powder, and baking soda in a large bowl and give it a good whisk

Mix the wet ingredients:

In another bowl, whisk your starter, eggs, melted butter, milk, and vanilla until completely smooth

Combine gently:

Pour wet into dry and fold until just combined, some streaks of flour are actually good here

Add the berries:

Fold in blueberries and lemon zest as gently as possible to avoid bursting them

Fill the muffin cups:

Divide batter evenly, going about three quarters full for that beautiful bakery style rise

Bake until golden:

22 to 25 minutes usually does it, checking that a toothpick comes out clean

Cool briefly:

Let them rest 5 minutes in the pan, then move to a wire rack so they do not get soggy bottoms

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These have become my go to for new neighbors and coworkers moving into the cube next to mine. Something about warm muffins makes people feel instantly at home.

Making Them Your Own

I once subbed half the flour for whole wheat when I was feeling virtuous, and the nuttiness was actually spectacular. A handful of oats sprinkled on top adds this lovely texture contrast too.

Storage Secrets

They keep beautifully on the counter for two days, but I freeze half the batch immediately because my husband would eat them all before lunch. Thirty seconds in the microwave brings them back to life perfectly.

Baking Wisdom

The toothpick test is your best friend here, but do not mistake melted blueberry on the skewer for raw batter. Check a few spots if you are unsure.

• Turbinado sugar on top before baking creates this incredible crust that everyone will ask about
• If your starter is very thick, add an extra tablespoon of milk to loosen the batter
• Set a timer for 20 minutes and check, every oven behaves differently

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There is nothing quite like pulling these from the oven on a slow morning, the kitchen smelling like butter and berries and possibility.

Your Recipe Questions

→ Can I use frozen blueberries instead of fresh?

Yes, frozen blueberries work well and can be added directly to the batter without thawing.

→ What does the sourdough starter add to the mixture?

It provides a subtle tangy flavor and helps keep the muffins moist and tender.

→ How can I make the muffins crunchier on top?

Sprinkling turbinado sugar on the batter before baking adds a delightful crunchy texture.

→ Is it possible to substitute some flour with whole wheat?

Yes, replacing part of the all-purpose flour with whole wheat flour adds a nuttier taste and heartier texture.

→ What’s the best way to check if muffins are done baking?

Insert a toothpick in the center; it should come out clean when muffins are fully baked.