My sourdough discard blueberry muffins are soft, fluffy, and packed with juicy blueberries — the perfect bakery-style treat for breakfast or afternoon coffee. The batter comes together in one bowl, and a high-heat start gives you those tall, crackly, bakery-style domes my family can't get enough of.
If you love sweet-and-tangy bakes, you'll also want to try my strawberry rhubarb galette, which pairs beautifully with my sourdough discard pie crust. Whether you serve these muffins warm with butter or enjoy them the next day with coffee, they're simple, cozy, and so good.
Quick Look: Lemon Blueberry Muffins
⏱️ Ready In: About 40 minutes
🔥 Bake Time: About 20 minutes (5 min at 400°F, then 15 min at 350°F)
🍽️ Makes: 12 muffins
✨ Calories: Approximately 305 per muffin
🥄 Main Ingredients: Sourdough discard, blueberries, butter, milk, vanilla
🌿 Dietary Info: Vegetarian
💛 Why You'll Love It: Tall bakery-style domes, juicy blueberries in every bite, and an easy one-bowl batter that uses up your discard.
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Why You’ll Love This Recipe
- A perfect use for sourdough discard. The discard adds tenderness and a subtle tang, just like in my sourdough discard banana muffins and my sourdough discard zucchini muffins.
- Soft, fluffy crumb. Butter and discard keep the muffins moist and light for days.
- Bursting with blueberries. Every muffin is packed with juicy berries.
- Bakery-style domes. A hot-oven start gives you those tall, crackly tops — the same one-bowl ease as my sourdough double chocolate muffins.
- Simple one-bowl batter. No mixer required.
Jump to:
- Quick Look: Lemon Blueberry Muffins
- Why You’ll Love This Recipe
- Ingredients
- Easy Substitutions & Variations
- Four-Step Overview
- Expert Tips
- What Makes This Recipe Special?
- Sourdough Discard Blueberry Muffins FAQs
- Sourdough Discard Blueberry Muffins Troubleshooting Guide
- Storage
- Other Muffin Recipes to Consider
- Sourdough Discard Blueberry Muffins
Ingredients
- All-purpose flour: The structure of the muffins.
- Granulated sugar: Sweetens and helps the tops crisp.
- Baking powder + baking soda: Your lift for those tall domes.
- Salt: Balances the sweetness.
- Unsalted butter (melted): Adds rich flavor and a tender crumb.
- Sourdough discard: Adds moisture and a subtle tang — the same tenderizing trick I use in my sourdough lemon pound cake.
- Milk: Loosens the batter for a soft, moist muffin.
- Egg + vanilla: Bind the batter and round out the flavor.
- Blueberries: Fresh or frozen both work; add frozen straight from the freezer. Discard gives these the same cozy depth as my sourdough lemon snack cake.
- Optional crumb topping (flour, brown sugar, melted butter): A buttery streusel lid for extra texture.
See recipe card for quantities.
Easy Substitutions & Variations
- No sourdough discard? Replace it with an equal amount of plain yogurt or extra milk.
- Dairy-free: Use melted coconut oil or a neutral oil in place of the butter, and a high-fat non-dairy milk.
- Buttermilk: For an even tangier, fluffier crumb, swap the milk for buttermilk (or make your own by stirring 2 teaspoons of lemon juice into the milk and letting it sit 5 minutes).
- Frozen blueberries: Use them straight from the freezer, no thawing — just expect a little color streaking.
- Mixed berry muffins: Swap some blueberries for raspberries or blackberries, like my bakery-style banana blackberry muffins.
- Blueberry lemon muffins: Add the zest of one to two lemons to the batter (and a simple lemon glaze after baking) for a bright citrus version — the same lemon-and-berry pairing in my lemon raspberry muffins.
- Cinnamon blueberry muffins: Add ½ teaspoon cinnamon to the batter for a subtle warm spice.
- Streusel lovers: Use the brown-sugar crumb topping — if you love streusel, you'll also love my sourdough discard coffee cake.
Four-Step Overview
Note: I bake by weight for accuracy. Cup measurements are approximate and may vary depending on how you scoop.
Step 1: Make the batter: Whisk the dry ingredients in one bowl. In another, whisk the melted butter, sourdough discard, milk, egg, and vanilla until smooth. Pour the wet into the dry and gently mix until just combined — don't overmix.
Step 2: Fold in the blueberries: Toss the blueberries with a teaspoon of flour, then gently fold them into the batter so they stay suspended.
Step 3: Fill the muffin cups: Divide the batter between 12 cups, filling each all the way to the top. Sprinkle with the optional crumb topping (or a little coarse sugar).
Step 4: Bake until tall and golden: Bake at 400°F for 5 minutes to set those domes, then — without opening the oven — reduce to 350°F and bake another 15 minutes, until golden and a toothpick comes out clean. Cool in the pan 5 minutes before transferring to a rack.
Weigh your ingredients! Using a kitchen scale ensures your measurements are accurate, which is key for getting consistent results in baking. It takes the guesswork out of measuring and helps your recipes turn out exactly as intended every time.
Expert Tips
- Start with a hot oven. The initial blast at 400°F sets tall, bakery-style domes; dropping to 350°F lets the centers finish without over-browning. Don't open the door when you switch.
- Don't overmix. Stir the batter just until combined — overmixing makes muffins dense and flat.
- Flour your blueberries. Tossing them in a little flour keeps them from sinking to the bottom.
- Fill the cups all the way up. Generously full cups are what give you those big domes.
- Add a few berries on top. Pressing a few extra blueberries onto each muffin before baking guarantees that bakery look.
What Makes This Recipe Special?
Plenty of blueberry muffins are fine; these are bakery-style. The sourdough discard builds tang and tenderness right into the crumb, while the two-temperature bake gives you tall, crackly domes you usually only get from a coffee shop. If you love a berry-packed muffin, you'll see the same idea in my bakery-style banana blackberry muffins.
They're also endlessly flexible. Dress them up with a streusel top, brighten them with lemon, or stretch the berry season with frozen fruit. If you can't get enough blueberry, my blueberry crumb bars put the same juicy berries into a sliceable, shareable form.
Sourdough Discard Blueberry Muffins FAQs
Yes. Frozen blueberries work well and can be added straight to the batter without thawing — just toss them in a little flour first and expect a bit of color streaking.
If your berries sink, toss them in a small spoonful of flour before folding them in. Smaller berries, like wild blueberries, also stay suspended better. I like to press a few extra berries on top before baking, so they're always visible.
The initial high heat makes the muffins rise quickly and creates those tall, bakery-style tops. Lowering the temperature afterward lets the centers bake through without over-browning.
Yes — replace the discard with an equal amount of plain yogurt or extra milk. You'll lose a little of the signature tang but still get a lovely, tender muffin.
Absolutely. Swapping the milk for buttermilk gives an even fluffier, slightly tangier crumb — a great option if you keep it on hand.
Sourdough Discard Blueberry Muffins Troubleshooting Guide
| Problem | Cause | Fix |
|---|---|---|
| Flat muffins, no dome | Batter overmixed or oven not hot enough at the start. | Mix just until combined and start the bake at 400°F before dropping to 350°F. |
| Blueberries sank | Berries added without flouring. | Toss berries in a teaspoon of flour before folding them in. |
| Dense, gummy crumb | Overmixed batter. | Fold gently and stop as soon as the flour disappears. |
| Tops over-browned | Oven runs hot, or baked too long at high heat. | Only keep the high heat for the first 5 minutes, then reduce to 350°F. |
| Muffins stuck to the pan | No liners or grease. | Use paper liners or grease the pan well. |
Storage
- Room temperature: Store in an airtight container for up to 2 days.
- Refrigerator: Keep for up to 5 days; warm slightly before serving for the best texture.
- Freezer: Freeze in a sealed container for up to 2 months. Thaw at room temperature or warm briefly in the microwave.
Other Muffin Recipes to Consider
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Sourdough Discard Blueberry Muffins
Equipment
- Muffin tin
- Kitchen Scale
- Muffin liners
- Mixing bowls
- Whisk
- Rubber spatula
- Cooling rack
Ingredients
Sourdough Blueberry Muffin Batter
- 240 g all-purpose flour 2 cups
- 150 g granulated sugar ¾ cup
- 2 teaspoons baking powder
- ½ teaspoon baking soda
- ½ teaspoon salt
- 113 g unsalted butter melted (½ cup)
- 120 g sourdough discard ½ cup
- 180 g milk ¾ cup
- 1 large egg
- 2 teaspoons vanilla extract
- 200 g blueberries 1½ cups, fresh or frozen
Optional Crumb Topping
- 60 g all-purpose flour ½ cup
- 100 g brown sugar ½ cup
- 42 g melted butter 3 tablespoons
Instructions
- Prep the oven: Preheat oven to 400°F (204°C). Line a muffin tin with paper liners.
- Mix dry ingredients: In a large bowl whisk together flour, sugar, baking powder, baking soda, and salt.240 g all-purpose flour, 150 g granulated sugar, 2 teaspoons baking powder, ½ teaspoon baking soda, ½ teaspoon salt
- Mix wet ingredients: In another bowl whisk melted butter, sourdough discard, milk, egg, and vanilla until smooth.113 g unsalted butter, 120 g sourdough discard, 180 g milk, 1 large egg, 2 teaspoons vanilla extract
- Combine batter: Pour wet ingredients into the dry ingredients and gently mix until just combined.
- Fold in blueberries: Toss blueberries with a teaspoon of flour and gently fold them into the batter.200 g blueberries
- Fill muffin cups: Divide batter between 12 muffin cups, filling all the way to the top.
- Add crumb topping (optional): Mix crumb topping ingredients and sprinkle over muffins.60 g all-purpose flour, 100 g brown sugar, 42 g melted butter
- Bake: Bake at 400°F for 5 minutes, then reduce temperature to 350°F and bake another 15 minutes, until golden and a toothpick comes out clean. Do not open the oven during the temperature change.
- Cool: Let muffins cool in the pan for 5 minutes before transferring to a rack.
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