Sourdough Discard Blueberry Muffins

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These sourdough discard blueberry muffins are the perfect way to use up extra starter while baking something warm and delicious for breakfast! They're springy but tender and packed with juicy blueberries—ideal for a cozy weekend brunch or after school snack.

A batch of blueberry muffins with a sparkly sugar topping are cooling on a baker's rack next to a blue and white striped towel.

I don't often make muffins because I love the ease of a one-pan quick bread but I've been on a mission to find new ways to use my sourdough starter discard and this just seemed like the perfect fit for a weekend treat.

These have honestly become my new all-time favorite breakfast pastry! My house smelled utterly amazing as those golden brown, buttery muffins baked away. The crisp-tender and chewy sugary muffin tops are my favorite part but the crumb texture is moist and springy. Sheer muffin perfection.

The best part? They take just minutes to stir together and if you use my signature muffin assembly trick, you'll have picture-perfect muffins in a flash.

Why This is the Best Recipe

  • Perfectly Moist & Tender: The combination of sourdough discard and Greek yogurt gives these muffins a delicious light texture.
  • Golden Brown Muffin Tops: Just the right amount of sugar highlights the tart blueberries and makes muffins that bake up with the most delicious golden brown top ever.
  • No Waste Baking: This recipe is a great way to repurpose sourdough discard instead of throwing it away!

Ingredients

The tub of sourdough discard is on the counter next to the remaining ingredients to make the blueberry muffins.

These simple, pantry-friendly ingredients come together for bakery-style muffins at home:

  • Sourdough Discard: You can use inactive sourdough discard that has been stored in your fridge for up to two weeks or you can use it fresh after you've done a sourdough starter feeding. Room temperature or chilled, you can use it either way.
  • Greek Yogurt: I used 5% fat plain Greek yogurt, you could also use sour cream.
  • Butter: I used salted butter, if you use unsalted you'll want to add 1/2 teaspoon of table salt to the recipe.
  • Fresh Blueberries: Frozen blueberries could work in this recipe but are likely to turn your muffins purple from the extra juices that run with them.
  • All-Purpose Flour
  • Sugar
  • Baking Powder
  • Baking Soda
  • Egg
  • Vanilla

Prep the Muffin Batter

In a large bowl, whisk together the flour, sugar, baking powder, and baking soda. Set it aside.

The step by step photo collage shows how to mix together the muffin batter with sourdough discard.

Weigh the sourdough discard in a separate mixing bowl. Add the Greek yogurt or sour cream and melted butter to it. Mix them together. This cools down the melted butter so that when you next add the egg, it won't begin to scramble from the heat of the butter.

Add the egg and vanilla, stir them in until well combined.

Now that you have one bowl of wet ingredients and one bowl of dry ingredients, it is time to fold them together. Scrape the sourdough mixture into the dry flour bowl and gently stir it together.

One bowl of dry ingredients and one bowl of wet ingredients are about to be mixed together for the muffin batter.

The final muffin batter will be very thick. Do not overmix it, stop as soon as there is almost no dry pockets of flour left.

The final batter has been mixed and is very thick.

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Why Blueberry Muffins Turn Purple

See how thick that muffin batter is? Blueberries are a very delicate and juicy fruit. If you try to stir fresh or frozen blueberries into that thick batter, the juices will turn your muffins purple.

The muffins will still taste absolutely delicious but if you want picture-perfect muffins that look pretty on your breakfast platter, the most important trick from this recipe is to layer the blueberries into the muffin tin, do not try to stir them into the thick batter where they will simply break apart.

How to Layer the Blueberries

Place a cupcake liner into each well of a 12-well muffin tin.

Use a small table spoon to scoop about 1 tablespoon of batter and drop it into each well.

Press 4 - 5 blueberries into the batter dollops. The batter is so thick and sticky, you can use the berries to push it into the corners of the well.

The step by step photo collage shows how to layer the batter and blueberries in a muffin tin to prevent the muffins from turning purple.

Drop another spoonful of batter on top, layer more blueberries. Repeat once again until you have used up all the batter.

You'll want to be sure to reserve some blueberries for pressing into the tops so everything is nudged into place.

This step takes just a few minutes but makes an enormous difference in the appearance of the final muffins.

Top the Muffins

You have a few options for finishing off your muffin tops.

A container of sparkling sugar sits in front of a muffin tin filled with blueberry muffin battter.
  1. Regular Sugar: Sprinkle a pinch of regular sugar over the top of each muffin.
  2. Sparkling Sugar: Use a thicker, coarser sparkling sugar for a dazzling sugary top. This was my choice.
  3. Streusel Muffins: Make my easy make-ahead streusel topping. You'll probably want to use jumbo-muffin tins for this to have enough room.
  4. Melted Butter: You could brush just a little more melted butter over the tops of the muffins to help them brown.
  5. Plain: Don't top them with anything and enjoy them as-is.

Baking Instructions

Preheat your oven to 375°F.

Bake the muffins for 20 - 25 minutes or until the tops are golden brown and a toothpick comes out with moist crumbs.

Let the muffins cool for 10 minutes in the pan before you try to remove them. This helps ensure the crispy muffin tops do not separate from the muffin base.

The pan of muffins has just come out of the oven, the tops are golden brown.

TOP TIP: If your tops bake together like mine almost did, use a non-stick spatula to gently "cut" lines between each muffin top while they are still hot. They will cool and firm up and be easy to lift from the pan without sticking to their neighbors.

Make Ahead & Storage Tips

Storage: Keep muffins in an airtight container at room temperature for up to 3 days or refrigerate for a week.

Freezing: Freeze the muffins in a single layer for up to 3 months. Thaw at room temperature or warm in the microwave.

Reheating: For a fresh-baked texture, warm the muffins in the oven at 300°F for 5-7 minutes.

Variations

Once you've used sourdough discard to make these delicious muffins, you'll want to try the method on more flavors:

  • Lemon Blueberry: Add lemon zest to the batter for a bright citrus flavor.
  • Cinnamon Spice: Mix in 1/2 teaspoon of cinnamon for a warm, cozy taste.
  • Raspberry Muffins (Or Other Fruits): You can use the same technique of layering batter and fruit with fresh raspberries, blackberries, or chopped strawberries.
  • Chocolate Chip Muffins: Swap the blueberries for mini chocolate chips.

Serving Suggestions

A batch of blueberry muffins with a sparkly sugar topping are cooling on a baker's rack next to a blue and white striped towel.

My family enjoyed these as a special weekend breakfast treat. They quickly became my all-time favorite muffin because they were so easy to bake and I love the texture!

These would make an excellent potluck party treat to bring for a brunch party or a snack. I could definitely see serving them for Easter brunch or a Mother's Day brunch.

To make them extra fancy for a tea party, serve them alongside a dollop of lemon curd or my mock clotted cream.

I loved these muffins so much, I would happily eat one for dessert like a blueberry cupcake. You could top it with a cream cheese drizzle or serve with a scoop of vanilla ice cream and a drizzle of my blueberry preserves for a blueberry muffin sundae.

More Easy Muffins and Quick Breads

Looking for more breakfast pastries to serve for brunch? Here are a few of my favorites:

More Sourdough Discard Recipes

If you're just getting started with sourdough, you'll definitely want to check out some of my favorite sourdough discard recipes:

📖 Recipe

A batch of blueberry muffins with a sparkly sugar topping are cooling on a baker's rack next to a blue and white striped towel.

Sourdough Discard Blueberry Muffins

Please Rate this Recipe
These sourdough discard blueberry muffins are the perfect way to use up extra starter while baking something warm and delicious for breakfast! They're springy but tender and packed with juicy blueberries—ideal for a cozy weekend brunch or after school snack.
TOTAL TIME 35 minutes
PREP TIME 15 minutes
COOK TIME 20 minutes
YIELD 12

Ingredients
  

  • 1 1/2 cups all-purpose flour
  • 1 cup sugar
  • 2 teaspoons baking powder
  • 1/2 teaspoon baking soda
  • 1/2 cup (105 g) sourdough discard
  • 8 tablespoons (1 stick) butter melted
  • 3/4 cup Greek yogurt or sour cream
  • 1 egg
  • 1 teaspoon vanilla
  • 1 1/2 cups fresh blueberries

Instructions

  • Preheat the oven to 375°F. Place cupcake liners in each well of a 12-well muffin tin and set aside.
  • Whisk the dry ingredients together in a large mixing bowl: add the flour, sugar, baking powder, and baking soda. Stir until combined.
  • Weigh the sourdough starter in a separate bowl. Add the sour cream and melted butter and stir them in. This helps cool the butter down before you add the egg.
  • Add the egg and vanilla to the sourdough bowl. Whisk them in until smooth.
  • Pour the sourdough mixture into the bowl of flour. Gently fold everything together. Do not overmix the muffins, stop as soon as everything is combined.
  • Using a small table spoon, scoop a little muffin batter into each muffin well. Sprinkle some fresh blueberries over the top. Continue to spoon batter and layer blueberries until the batter has been evenly divided among the wells. This helps prevent your muffins from turning purple from blueberry juices.
  • Bake the muffins for 20 - 25 minutes. The tops should be golden brown and a toothpick should have crumbs clinging when poked in the middle of a muffin.
  • Let the blueberry muffins cool for 10 minutes in the pan before transferring to a wire rack.
COURSEBreakfast
CUISINEAmerican

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A batch of blueberry muffins with a sparkly sugar topping are cooling on a baker's rack next to a blue and white striped towel.

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