Sourdough Blueberry Donuts Recipe (Soft, Fluffy & Naturally Fermented)

If you love homemade donuts and enjoy baking with sourdough, these Sourdough Blueberry Donuts are a must-try. They’re soft, fluffy, lightly sweet, and bursting with juicy blueberries in every bite. The natural fermentation from sourdough starter not only enhances flavor but also creates a tender crumb that’s hard to beat.

Unlike traditional donuts made with commercial yeast, sourdough donuts have a deeper flavor and are easier to digest thanks to the fermentation process. Whether you fry them for a classic bakery-style donut or bake them for a lighter version, this recipe delivers irresistible results.

Perfect for breakfast, brunch, or a sweet afternoon treat, these donuts pair wonderfully with coffee or tea. Let’s dive into this delicious sourdough blueberry donut recipe and learn how to make them step-by-step.

Why You’ll Love These Sourdough Blueberry Donuts

There are many reasons why these donuts will quickly become a favorite in your kitchen.

Naturally Fermented Flavor
The sourdough starter adds a mild tang that balances the sweetness of the blueberries and sugar.

Soft and Fluffy Texture
The dough develops a light, airy structure that makes every bite melt in your mouth.

Perfect Use for Sourdough Starter
If you bake sourdough bread regularly, this recipe is a great way to use your active starter or discard.

Bursting with Blueberries
Fresh or frozen blueberries add natural sweetness and beautiful color.

Versatile Cooking Methods
These donuts can be deep-fried, air-fried, or baked, depending on your preference.

Ingredients for Sourdough Blueberry Donuts

For the Dough

1 cup active sourdough starter (Sourdough Starter from Scratch)
2 ½ cups all-purpose flour
¼ cup sugar
½ cup warm milk
1 egg
3 tablespoons butter (softened)
½ teaspoon salt
1 teaspoon vanilla extract
1 cup fresh or frozen blueberries

For Frying

Oil for deep frying

Optional Glaze

1 cup powdered sugar
2–3 tablespoons milk
½ teaspoon vanilla extract

Equipment Needed

To make these donuts successfully, you’ll need:

Mixing bowl
Stand mixer or wooden spoon
Rolling pin
Donut cutter (or two round cutters)
Deep frying pan or fryer
Cooling rack
Slotted spoon

Step-by-Step Instructions

1. Prepare the Dough

In a large mixing bowl, combine the sourdough starter, warm milk, sugar, egg, and vanilla extract. Mix until smooth.

Add the flour and salt, then mix until a dough begins to form. Add the softened butter and knead the dough for about 8–10 minutes until smooth and elastic.

Gently fold in the blueberries, being careful not to crush them too much.

2. First Rise (Fermentation)

Place the dough in a lightly greased bowl and cover it with plastic wrap or a damp towel.

Let the dough ferment at room temperature for 6–8 hours or until it doubles in size. For deeper flavor, you can refrigerate the dough overnight.

3. Shape the Donuts

Once the dough has risen, place it on a lightly floured surface.

Roll the dough to about ½ inch thickness.

Use a donut cutter to cut out donut shapes. If you don’t have one, use a large glass for the outer circle and a small bottle cap for the hole.

Place the shaped donuts on a lined baking sheet.

4. Second Rise

Cover the donuts lightly and let them rise again for 1–2 hours until slightly puffy.

This second rise helps create that classic fluffy donut texture.

5. Fry the Donuts

Heat oil in a deep pan to 350°F (175°C).

Carefully place 2–3 donuts at a time into the hot oil. Fry each side for 1–2 minutes until golden brown.

Remove with a slotted spoon and place on a cooling rack or paper towels.

6. Add the Glaze

In a small bowl, whisk together powdered sugar, milk, and vanilla extract until smooth.

Dip the warm donuts into the glaze or drizzle it on top.

You can also sprinkle powdered sugar or add a blueberry glaze for extra flavor.

Baked Sourdough Blueberry Donuts (Alternative Method)

If you prefer a healthier option, these donuts can also be baked.

Preheat oven to 350°F (175°C).
Place shaped donuts on a lined baking tray.
Bake for 12–15 minutes until lightly golden.
Let cool slightly before glazing.

Baked donuts will be slightly more cake-like but still delicious.

Tips for Perfect Sourdough Donuts

Use an Active Starter

Your sourdough starter should be bubbly and active for the best rise.

Handle Blueberries Gently

Overmixing can break the berries and turn the dough purple.

Maintain Oil Temperature

If the oil is too hot, the donuts will brown quickly but remain raw inside.

Don’t Skip the Second Rise

This step ensures light, fluffy donuts instead of dense ones.

Use Fresh Blueberries When Possible

Fresh berries hold their shape better during frying.

Flavor Variations

You can easily customize these donuts with different flavors.

Lemon Blueberry Donuts
Add lemon zest and lemon glaze for a bright citrus twist.

Blueberry Cream Cheese Donuts
Fill the donuts with sweet cream cheese frosting.

Blueberry Cinnamon Sugar Donuts
Instead of glaze, roll warm donuts in cinnamon sugar.

Blueberry Chocolate Chip Donuts
Add mini chocolate chips to the dough for extra indulgence.

Storage Tips

Room Temperature

Store donuts in an airtight container for 1–2 days.

Refrigerator

Keep them in the fridge for up to 5 days.

Freezer

Freeze unglazed donuts for up to 2 months. Reheat and glaze before serving.

Nutrition Information (Approximate per Donut)

Calories: 210
Carbohydrates: 28g
Protein: 4g
Fat: 9g
Fiber: 1g
Sugar: 10g

Nutrition values may vary depending on ingredients and cooking method.

Frequently Asked Questions

Can I Use Frozen Blueberries?

Yes. Frozen blueberries work well in this recipe. Just add them directly from the freezer to prevent excess moisture.

Can I Make These With Sourdough Discard?

Yes, but the dough may need additional fermentation time. Active starter will give the best rise.

Why Are My Donuts Dense?

This usually happens if the dough didn’t rise long enough or the starter wasn’t active.

Can I Air Fry These Donuts?

Yes. Lightly spray them with oil and air fry at 350°F (175°C) for 6–8 minutes.

Serving Ideas

These donuts taste amazing served with:

Fresh berries
Coffee or cappuccino
Vanilla glaze drizzle
Maple syrup
Whipped cream

They also make a wonderful addition to brunch spreads or weekend breakfasts.

Final Thoughts

These Sourdough Blueberry Donuts combine the rich flavor of sourdough with the natural sweetness of blueberries to create a bakery-quality treat at home. The long fermentation gives them a light texture and slightly tangy flavor that makes them unique compared to regular donuts.

Whether you fry them for a traditional donut experience or bake them for a lighter option, this recipe is sure to impress your family and friends. Once you taste the fluffy texture and juicy blueberries in every bite, these donuts might just become your new favorite sourdough recipe.