Sourdough Blueberry Muffins Recipe

Prep Time: 20 minutes (plus 12+ hours for optional resting)

Cook Time: 22-25 minutes
Total Time: 45 minutes (or 12+ hours with rest)
Skill Level: Easy
Yield: 12 standard muffins

The Last Bite

This recipe is more than just a clever use of sourdough discard; it’s a revelation in muffin texture and taste. The sourdough doesn’t scream “sour”—instead, it lends a complex, rounded background note that makes the sweet blueberries and vanilla truly sing. The optional overnight rest of the batter is a game-changer for busy bakers and flavor enthusiasts alike. It allows the flour to fully hydrate and the natural acids to work their magic, resulting in an incredibly tender, moist crumb and a slightly domed, crackly top that looks professionally made. You’re left with a muffin that’s hearty yet light, satisfyingly sweet but not cloying, and perfect with your morning coffee or as an afternoon treat. Once you try this method, you may never go back to a quick-mix muffin again.

Ingredients

Dry Ingredients

2 cups (250g) all-purpose flour
¾ cup (150g) granulated sugar
1 tsp baking soda
½ tsp baking powder
¾ tsp fine sea salt
Zest of one lemon (optional, but recommended)

Wet Ingredients

1 cup (240g) unfed sourdough starter discard (100% hydration, at room temperature)

1 large egg, at room temperature
½ cup (120ml) milk (any kind), at room temperature
¼ cup (60ml) neutral oil (like avocado or vegetable) or melted, cooled butter
1 tsp pure vanilla extract

Mix-Ins & Topping

1 ½ cups (200g) fresh or frozen blueberries (do not thaw if frozen)

1-2 tbsp coarse sugar (like turbinado), for sprinkling (optional)

Instructions

Step 1: Combine the Dry Ingredients

In a large mixing bowl, whisk together the flour, sugar, baking soda, baking powder, salt, and lemon zest (if using). Ensure everything is evenly distributed. This step prevents over-mixing later.

Step 2: Mix the Wet Ingredients

In a separate medium bowl, whisk the sourdough discard, egg, milk, oil (or melted butter), and vanilla extract until the mixture is smooth and well-combined.

Step 3: Create the Batter

Create a well in the center of the dry ingredients. Pour the wet mixture into the well. Using a spatula, gently fold the ingredients together. Mix only until the flour is just moistened—the batter will be lumpy and thick, and that’s perfect. Over-mixing leads to tough, dense muffins.

Step 4: Fold in the Blueberries

Toss the blueberries in a small spoonful of the measured flour (this helps prevent them from sinking). Gently fold them into the batter until just distributed.

Step 5: The Game-Changing Rest (Optional but Recommended)

For the best flavor and texture: Cover the bowl with plastic wrap and let the batter rest at room temperature for 1-2 hours, or in the refrigerator for 12-24 hours. If refrigerating, let it sit at room temperature for 30 minutes before baking.

Step 6: Preheat and Prepare

When ready to bake, preheat your oven to 400°F (200°C). Line a standard 12-cup muffin tin with paper liners or grease it thoroughly. This high initial heat is key for a great rise.

Step 7: Portion and Top

Divide the thick batter evenly among the 12 muffin cups—they should be quite full. Sprinkle the tops generously with coarse sugar, if using.

Step 8: Bake

Bake at 400°F (200°C) for 5 minutes, then without opening the door, reduce the oven temperature to 375°F (190°C). Bake for an additional 17-20 minutes, or until the tops are golden brown and a toothpick inserted into the center of a muffin comes out clean (a few moist crumbs are okay, but no wet batter).

Step 9: Cool and Serve

Allow the muffins to cool in the pan for 5 minutes before transferring them to a wire rack to cool completely. They are best served warm or at room temperature the day they are made.

Storage & Notes

Storage: Store completely cooled muffins in an airtight container at room temperature for up to 2 days, or in the refrigerator for up to 5 days. They also freeze beautifully for up to 3 months. Thaw at room temperature or warm in the oven.

Sourdough Starter: Your starter discard can be straight from the fridge. There’s no need to activate or feed it for this recipe.
Frozen Berries: Using frozen blueberries is highly effective. Do not thaw them, as they will bleed less into the batter.

Nutrition Information (Per Muffin)

Calories: ~220 kcal
Total Carbohydrates: 38g
Dietary Fiber: 1g
Sugars: 19g
Protein: 4g
Total Fat: 6g
Saturated Fat: 1g
Cholesterol: 20mg
Sodium: 280mg

Sourdough Blueberry Muffins Recipe

The Last Bite