Are you looking for a delightful breakfast or brunch option that combines the tangy goodness of sourdough with the sweet burst of fresh blueberries? Our Overnight Sourdough Blueberry Muffins are not only easy to prepare but also packed with flavor and nutrition. This long-form article will guide you through every detail, from ingredients and directions to storage, serving suggestions, and FAQs, ensuring your muffins turn out perfectly every time. Let’s dive into this mouthwatering recipe!
Table of Contents
Why You’ll Love This Recipe
- Unique Flavor Profile: The combination of active sourdough starter and fresh blueberries creates a tangy yet sweet muffin that’s irresistible.
- Convenience: Prep the batter the night before and bake in the morning for a fresh, hot breakfast with minimal effort.
- Nutritious and Wholesome: Made with simple ingredients, these muffins offer a balance of carbs, protein, and healthy fats.
- Versatile: Perfect for breakfast, snacks, or even dessert, these muffins are sure to be a hit with family and friends.
Equipment Needed
Before you start, gather these essential tools to ensure smooth sailing:
- Large mixing bowl
- Whisk or wooden spoon
- Measuring cups and spoons
- Muffin tin
- Non-stick cooking spray or muffin liners
- Oven
- Cooling rack
- Airtight container (for storage)
What you will need ?
Here’s what you’ll need to make 12 delicious Overnight Sourdough Blueberry Muffins. Each ingredient includes substitutions and uses for added flexibility.
1 Cup Active Sourdough Starter 🍞
- Use For: Provides fermentation, flavor, and a light, airy texture.
- Substitutions: If you don’t have a sourdough starter, you can use 1/2 cup plain yogurt mixed with 1/2 cup water and 1 tsp yeast as a substitute.
1/2 Cup Milk 🥛
- Use For: Adds moisture and richness to the batter.
- Substitutions: Use almond milk, oat milk, or any non-dairy milk for a lactose-free option. You can also substitute with buttermilk for a tangier flavor.
2 Cups All-Purpose Flour 🍚
- Use For: Forms the structure of the muffins.
- Substitutions: Swap with whole wheat flour for a heartier texture, or use gluten-free flour blend for a gluten-free version. Adjust liquid if needed.
1/2 Cup Granulated Sugar 🍬
- Use For: Sweetens the muffins and balances the sourdough tang.
- Substitutions: Use honey, maple syrup, or coconut sugar. Reduce liquid slightly if using liquid sweeteners.
1 Cup Fresh Blueberries 🍇
- Use For: Adds natural sweetness, moisture, and a burst of flavor.
- Substitutions: Frozen blueberries work too—just don’t thaw them to avoid excess moisture. You can also use raspberries or chopped strawberries.
1 Tsp Baking Soda 🧁
- Use For: Helps the muffins rise and become fluffy.
- Substitutions: Use 2 tsp baking powder if you don’t have baking soda, but skip the salt in the recipe.
1/4 Tsp Salt 🧂
- Use For: Enhances flavor and balances sweetness.
- Substitutions: Sea salt or kosher salt can be used; just adjust the quantity slightly.
1/4 Cup Unsalted Butter, Melted 🧈
- Use For: Adds richness and moisture.
- Substitutions: Substitute with coconut oil or vegetable oil for a dairy-free option. Margarine can also work in a pinch.

Topping Suggestions
Elevate your muffins with these delicious toppings:
- Cinnamon Sugar: Sprinkle a mix of cinnamon and sugar on top before baking for a sweet crunch.
- Streusel Topping: Combine 1/4 cup flour, 2 tbsp sugar, and 2 tbsp cold butter; crumble over batter.
- Lemon Glaze: Mix 1 cup powdered sugar with 2 tbsp lemon juice and drizzle over cooled muffins.
- Nutty Crunch: Add chopped walnuts or almonds on top for texture.
Step-By-Step Guiding
Follow these detailed, expanded steps to create perfect Overnight Sourdough Blueberry Muffins. Each step includes tips and explanations to ensure success.
Step 1: Prepare the Sourdough Blueberry Muffins Mixture
- Details: In a large mixing bowl, combine 1 cup of active sourdough starter with 1/2 cup milk. Use a whisk or wooden spoon to stir until the mixture is smooth and no lumps remain. The sourdough should be bubbly and active for best results.
- Tip: If your starter isn’t active, feed it 4-6 hours before and let it double in size. This ensures proper fermentation overnight.
- Time: 5 minutes.
Step 2: Mix Dry Ingredients
- Details: Add 2 cups all-purpose flour, 1/2 cup granulated sugar, 1 tsp baking soda, and 1/4 tsp salt to the sourdough mixture. Stir gently until a thick batter forms. Avoid overmixing to keep the muffins tender.
- Tip: Sift the flour if it’s lumpy to ensure even distribution. If the batter seems too dry, add a tablespoon of milk, but it should be thick and slightly sticky.
- Time: 5 minutes.
Step 3: Incorporate Blueberries and Butter
- Details: Gently fold in 1 cup fresh blueberries and 1/4 cup melted unsalted butter. Use a spatula to mix, being careful not to crush the berries. The butter should be cooled slightly to avoid cooking the batter prematurely.
- Tip: Rinse blueberries and pat them dry to prevent excess moisture. Coat them lightly in flour before adding to prevent sinking to the bottom of the muffins.
- Time: 5 minutes.
Step 4: Let the Batter Rise Overnight
- Details: Cover the bowl with a clean kitchen towel or plastic wrap. Let the batter sit at room temperature for 8-12 hours. This slow fermentation develops flavor and improves texture.
- Tip: Place the bowl in a draft-free area, like inside an oven (turned off). Check after 8 hours—if the batter has doubled and looks bubbly, it’s ready.
- Time: 8-12 hours.
Step 5: Preheat Oven and Prepare Muffin Tin
- Details: The next morning, preheat your oven to 375°F (190°C). While the oven heats, grease a 12-cup muffin tin with non-stick spray or line with paper liners. This ensures easy removal and prevents sticking.
- Tip: For even baking, place the oven rack in the middle position. Test your oven temperature with an oven thermometer if it runs hot or cold.
- Time: 10 minutes.
Step 6: Fill and Bake Muffins
- Details: Spoon the risen batter evenly into the muffin cups, filling each about 3/4 full. This allows room for rising. Bake for 25 minutes or until the tops are golden brown and a toothpick inserted in the center comes out clean.
- Tip: Rotate the tin halfway through baking for even browning. If the tops brown too quickly, tent with foil.
- Time: 25 minutes.
Step 7: Cool and Serve
- Details: Remove the muffins from the oven and let them cool in the tin for 5 minutes. Transfer to a wire rack to cool completely. Serve warm or at room temperature.
- Tip: Don’t leave muffins in the tin too long, or they may become soggy. Store any leftovers in an airtight container.
- Time: 10 minutes.

How to Store & Reheating
- Storage: Keep muffins in an airtight container at room temperature for up to 2 days. For longer storage, freeze in a zip-lock bag for up to 3 months.
- Reheating: Warm muffins in the microwave for 15-20 seconds or in a 300°F oven for 5-10 minutes. Frozen muffins can be thawed overnight in the fridge and reheated.

What to Serve With
Pair your muffins with these complementary items for a complete meal:
- Fresh fruit salad for a light, refreshing side.
- A dollop of whipped cream or Greek yogurt for added creaminess.
- A hot cup of coffee, tea, or milk to balance the sweetness.
- Scrambled eggs or bacon for a hearty breakfast combo.

FAQs
Can I use frozen blueberries instead of fresh in blueberry muffins?
Yes, frozen blueberries work well. Don’t thaw them before adding to prevent excess moisture, which can make the batter watery.
How do I know if my sourdough starter is active?
An active starter should be bubbly, doubled in size, and have a slightly sour smell. Feed it 4-6 hours before using if it’s been stored in the fridge.
Can I make gluten-free blueberry muffins?
Yes, substitute all-purpose flour with a gluten-free flour blend. Add 1/2 tsp xanthan gum if the blend doesn’t include it for better structure.
How long can the muffins batter sit before baking?
The batter can sit for 8-12 hours at room temperature. Beyond that, refrigerate it and use within 24 hours for best results.
Why did my muffins sink in the middle?
This could be due to overmixing, too much baking soda, or opening the oven door too early. Ensure accurate measurements and avoid disturbances during baking.
Homemade Overnight Sourdough Blueberry Muffins Recipe
- Total Time: 12 hours (including overnight rise)
- Yield: 12 1x
Description
Ingredients
- 1 cup active sourdough starter
- 1/2 cup milk
- 2 cups all-purpose flour
- 1/2 cup granulated sugar
- 1 cup fresh blueberries
- 1 tsp baking soda
- 1/4 tsp salt
- 1/4 cup unsalted butter, melted
Instructions
- In a large bowl, mix the sourdough starter with milk until smooth. 🍞🥛
- Add flour, sugar, baking soda, and salt, stirring until a thick batter forms. 🍚🍬🧁🧂
- Gently fold in the blueberries and melted butter, being careful not to crush the berries. 🍇🧈
- Cover the bowl and let the batter rise overnight at room temperature for 8-12 hours. ⏲️
- Preheat the oven to 375°F (190°C), spoon the batter into a greased muffin tin, and bake for 25 minutes or until golden.
- Prep Time: 15 minutes
- Cook Time: 25 minutes
Nutrition
- Serving Size: 1 muffin
- Calories: 220 per muffin
- Sugar: 12g
- Sodium: 150mg
- Fat: 8g
- Saturated Fat: 4g
- Unsaturated Fat: 3g
- Trans Fat: 0g
- Carbohydrates: 34g
- Fiber: 2g
- Protein: 4g
- Cholesterol: 15mg
This detailed guide ensures your Overnight Sourdough Blueberry Muffins are a success, whether you’re a beginner or a seasoned baker. Enjoy the process, and savor the delicious results!