These Blueberry Lemon Poppy Seed Sourdough Muffins are a fruity delight! Packed with juicy blueberries and a hint of lemon, they’re sure to brighten your day.
Plus, the poppy seeds add a lovely crunch that makes every bite fun. I can’t help but grab a second one—who can resist such a tasty treat?
Key Ingredients & Substitutions
Sourdough Starter: A key ingredient, it gives the muffins a unique flavor. If you don’t have any, you can use yogurt or buttermilk as a substitute, but the texture may vary. Make sure to adjust the liquid accordingly.
Milk: Any type of milk works here, from whole to almond. For a richer flavor, I prefer buttermilk! If you’re dairy-free, coconut or oat milk are great options.
Poppy Seeds: These add a nice crunch and visual appeal. If you can’t find them, feel free to use chia seeds or simply leave them out altogether for a lighter muffin.
Blueberries: Fresh blueberries bring the best flavor, but frozen works too! Just make sure to not thaw them first, or they may turn mushy. If blueberries aren’t available, raspberries or chopped strawberries are also delicious substitutions.
How Do You Fold in the Blueberries Carefully Without Crushing Them?
Folding in blueberries is all about being gentle. Here’s how to do it effectively:
- Once you’ve mixed your batter, use a spatula to gently scoop under the batter.
- Add half the blueberries on top of the batter.
- Carefully use the spatula to lift and fold the batter over the blueberries. Repeat, adding the rest of the blueberries.
- Avoid vigorous stirring; you want to see those beautiful blueberries intact!
This technique helps keep the muffins light and fluffy while ensuring you get juicy bursts of blueberry in every bite!

Blueberry Lemon Poppy Seed Sourdough Muffins
Ingredients You’ll Need:
For the Muffins:
- 1 cup active sourdough starter (unfed or discard)
- 1/4 cup milk (any type)
- 1 large egg
- 1/2 cup granulated sugar
- 1/4 cup vegetable oil or melted butter
- 1 teaspoon vanilla extract
- Zest of 1 lemon
- 1 tablespoon lemon juice
- 1 1/4 cups all-purpose flour
- 1/2 teaspoon baking soda
- 1/2 teaspoon baking powder
- 1/4 teaspoon salt
- 2 tablespoons poppy seeds
- 1 cup fresh blueberries (reserve some for garnish)
For the Glaze:
- 1/2 cup powdered sugar
- 1-2 teaspoons lemon juice
How Much Time Will You Need?
This delightful recipe will take about 15 minutes to prepare and 20-25 minutes to bake. Give your muffins another 5 minutes to cool in the pan before transferring them to a wire rack. Including the time for the glaze to set, the total time is around 45-50 minutes of pure muffin-making joy!
Step-by-Step Instructions:
1. Preheat the Oven:
Start by preheating your oven to 375°F (190°C). This step is essential to ensure that your muffins bake evenly. While it’s heating, grease or line a muffin tin with paper liners to make cleanup easier!
2. Mix the Wet Ingredients:
In a large mixing bowl, combine the active sourdough starter, milk, egg, sugar, vegetable oil (or melted butter), vanilla extract, lemon zest, and lemon juice. Use a whisk to blend everything together until it’s smooth and creamy.
3. Combine the Dry Ingredients:
In a separate bowl, sift together the all-purpose flour, baking soda, baking powder, salt, and poppy seeds. This helps incorporating air into your dry mix, ensuring a light muffin.
4. Combine Wet and Dry Ingredients:
Gradually add the dry ingredient mixture to the wet ingredients. Use a spatula to gently stir them together until just combined. Remember, you don’t want to overmix—this will keep the muffins soft and fluffy!
5. Fold in the Blueberries:
Carefully fold in the fresh blueberries using a gentle lifting motion. This will help maintain their shape and keep the muffins from turning too blue inside!
6. Fill the Muffin Tins:
Spoon the batter into the prepared muffin cups, filling each about 3/4 full. If desired, place a few extra blueberries on top of each muffin for added visual appeal.
7. Bake the Muffins:
Pop the muffin tin into the preheated oven and bake for 20-25 minutes. Check for doneness by inserting a toothpick into the center of a muffin—if it comes out clean, they’re ready!
8. Prepare the Glaze:
While the muffins are baking, make the glaze by whisking together the powdered sugar and lemon juice until smooth. If it’s too thick, feel free to add a touch more lemon juice to reach your desired consistency.
9. Cool and Drizzle:
Once baked, allow your muffins to cool in the pan for about 5 minutes. Then, transfer them to a wire rack. Now it’s time to drizzle the lemon glaze over the warm muffins, making some pretty crisscross patterns!
10. Let Set and Enjoy:
Allow the glaze to set before serving. You can enjoy your muffins warm or at room temperature—either way, they are a delightful treat!
Enjoy your moist, tangy, and poppy seed-speckled Blueberry Lemon Sourdough Muffins!
Can I Use Frozen Blueberries Instead of Fresh?
Absolutely! You can use frozen blueberries, but it’s best to keep them frozen until you’re ready to fold them into the batter. This helps prevent them from turning the batter blue and ensures they stay plump while baking!
How Should I Store Leftover Muffins?
Store any leftover muffins in an airtight container at room temperature for up to 3 days. For longer storage, you can freeze them! Just wrap each muffin tightly in plastic wrap and place them in a freezer-safe bag for up to 3 months.
Can I Make These Muffins Without Poppy Seeds?
Yes, if you prefer not to use poppy seeds, you can omit them entirely or substitute with chia seeds for a similar texture. The muffins will still be delicious without them!
What’s the Best Way to Reheat the Muffins?
To reheat, simply place the muffins in a microwave for about 15-20 seconds or until warmed through. If you prefer, you can also pop them in a preheated oven at 350°F (175°C) for about 5-10 minutes until heated. Enjoy them warm for the best flavor!
