Sourdough Mixed Berry Muffins (Quick & Easy Recipe with Sourdough Discard)

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These quick and easy sourdough mixed berry muffins are soft, moist, and packed with juicy berries. Made with sourdough discard, Greek yogurt, and simple ingredients.

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Muffins are a staple in our house. I usually bake a batch at least once or twice a week because they make breakfast so quick and easy. Paired with a protein-rich food, they become a simple, satisfying breakfast, and I always stash a few in the freezer for busy mornings. (If you’re a muffin lover too, be sure to check out all my muffin recipes.)

One of my favorite things about these Sourdough Mixed Berry Muffins is that it uses frozen mixed berries. They’re budget-friendly, available year-round, and make it easy to bake berry muffins any time without worrying about what’s in season. Whether you’re looking for an easy sourdough discard recipe, a make-ahead breakfast, or a freezer-friendly snack, these muffins are sure to become a regular in your kitchen.

For busy mornings, they’re hard to beat. Bake a batch ahead of time, freeze the extras, and simply grab one when you need a quick breakfast, lunchbox addition, or afternoon snack.

Why You’ll Love These Sourdough Mixed Berry Muffins

Perfect Use for Sourdough Discard

If you’re regularly feeding a sourdough starter, you know how quickly discard can add up. This recipe is a delicious way to use that extra starter while adding moisture and flavor to your muffins.

Soft and Moist Texture

The combination of Greek yogurt, butter, and sourdough starter creates incredibly tender muffins that stay moist for days.

Made with Real Ingredients

At My Colorado Kitchen, we believe that real ingredients make the best recipes. These muffins are made with simple ingredients you likely already have in your pantry.

Freezer Friendly

Make a double batch and freeze some for later. They reheat beautifully for quick breakfasts throughout the week.

Great for Busy Families

These muffins are easy to make, kid-approved, and perfect for breakfast, snacks, or lunchboxes.

Ingredients You’ll Need

Wet Ingredients

• 3 large eggs
• 1 cup sugar
• 1 cup Greek yogurt
• ¼ cup whole milk
• 10 tablespoons melted butter
• ½ cup sourdough starter or sourdough discard
• 2 teaspoons vanilla extract (Check out my Homemade Vanilla Extract Recipe HERE)

Dry Ingredients

• 2¾ cups all-purpose flour
• 2 teaspoons baking powder
• ½ teaspoon baking soda
• ½ teaspoon salt

Mix-Ins

• 2 cups frozen mixed berries

Topping

• Turbinado sugar – for sprinkling on top of the muffins before baking

Ingredient Notes

Sourdough Starter

This recipe works wonderfully with either active sourdough starter or sourdough discard. Since the rise comes primarily from baking powder and baking soda, there is no need to use freshly fed starter.

Greek Yogurt

Greek yogurt adds richness, moisture, and a slight tang that pairs beautifully with the berries.

Frozen Mixed Berries

Frozen berries are economical and convenient. I recommend adding them directly from the freezer without thawing.

Butter

Melted butter gives these muffins a rich flavor and tender crumb. I love using grass-fed butter whenever possible.

How to Make Sourdough Mixed Berry Muffins

Step 1: Prepare the Oven

Preheat your oven to 425°F. Line two muffin tins with paper liners or lightly grease the muffin cups.

Step 2: Mix the Wet Ingredients

In a large mixing bowl or the bowl of a stand mixer, combine:

• Eggs
• Sugar
• Greek yogurt
• Whole milk
• Melted butter
• Sourdough starter
• Vanilla extract

Mix until smooth and well combined.

Step 3: Add the Dry Ingredients

Add the flour, baking powder, baking soda, and salt.

Mix just until the ingredients come together. Be careful not to overmix, as this can create dense muffins.

Step 4: Fold in the Berries

Gently fold the frozen mixed berries into the batter. Mixing gently helps prevent the berries from breaking apart and turning the batter purple.

Step 5: Fill the Muffin Tin

Using a 3-tablespoon cookie scoop, divide the batter evenly among the muffin cups and top with turbinado sugar.

This recipe makes approximately 24 muffins.

Step 6: Bake

Bake at 425°F for 8 minutes.

Without opening the oven door, reduce the temperature to 375°F and continue baking for 10 to 12 minutes, or until a toothpick inserted into the center comes out clean.

Allow the muffins to cool in the pan for 5 minutes before transferring them to a wire rack.

Tips for the Best Sourdough Berry Muffins

Don’t Thaw the Berries

Frozen berries hold their shape better and help prevent excess moisture in the batter.

Avoid Overmixing

Overmixing develops gluten, which can lead to tough muffins.

Use Room Temperature Ingredients

Room temperature eggs and yogurt blend more easily and help create a smoother batter.

Fill Muffin Cups Generously

A fuller muffin cup helps create those high-domed bakery-style tops.

Variations

• Triple Berry Muffins – Use a blend of blueberries, raspberries, and blackberries.
• Lemon Berry Muffins – Add the zest of one lemon to the batter and drizzle with a simple lemon glaze after baking.
• Strawberry Sourdough Muffins – Replace the mixed berries with chopped strawberries.
• White Chocolate Berry Muffins – Fold in 1 cup of white chocolate chips along with the berries.

Storage Instructions

Room Temperature

Store in an airtight container for up to 3 days.

Refrigerator

Store for up to 1 week.

Freezer

Freeze in a freezer-safe container or bag for up to 3 months.

To serve, thaw overnight or warm in the oven at 300°F for 5-10 min.

Final Thoughts

These Sourdough Mixed Berry Muffins are one of my favorite ways to use sourdough discard while creating a simple, wholesome breakfast for my family. They’re soft, moist, packed with berries, and easy enough for even busy weekday mornings.

Whether you’re enjoying them fresh from the oven, packing them in lunchboxes, or pulling a few from the freezer for a quick breakfast, these muffins are sure to become a regular part of your baking routine.

If you make this recipe, I’d love to hear how it turned out in the comments below!

Where Real Ingredients Meet Everyday Cooking.