Lemon Blueberry Sourdough Bread: A Soft, Tangy Loaf with Fresh Berries

This lemon blueberry sourdough bread turns your discard into something special, with a soft, tender crumb and pops of warm blueberry in every slice. Bright lemon zest and a buttery crumble top make it feel like a bakery loaf, without any of the all day waiting.

It mixes up as a quick bread, so you can have a fragrant, golden loaf on the counter in just over an hour. The sourdough brings a gentle, pleasant tang that balances the sweet berries, and the crumble gives the top a crisp, sugary crust while the inside stays moist.

What Makes This Loaf So Good

The crumb is soft and custardy, almost like a muffin, and the sourdough discard adds a depth of flavor you don’t get from baking powder alone. It’s not sour, just a quiet, old-fashioned tang that works with the lemon.

Folding the berries in at the very end keeps them intact, so you get whole jammy pockets instead of purple streaks. That crumble topping bakes up crisp and buttery, and it stays just as good the next day, if the loaf lasts that long.

I keep coming back to this recipe because it uses discard that might otherwise get thrown out and turns it into something worth slicing into while it’s still warm. The smell of lemon and butter in the kitchen alone is reason enough to make it on a slow morning.

Ingredients

• 1 ½ cups (190 g) all-purpose flour: spooned and leveled, not scooped
• 2 tsp baking powder: helps the loaf rise without a long ferment
• ½ tsp salt: fine sea salt
• ½ cup (1 stick / 113 g) unsalted butter: melted and cooled slightly
• ¾ cup (150 g) granulated sugar
• 2 large eggs: at room temperature
• 1 tsp vanilla extract
• 1 cup (240 g) sourdough discard: unfed, straight from the fridge is fine
• ¼ cup (60 ml) whole milk: or buttermilk
• 2 tbsp freshly squeezed lemon juice
• 1 tbsp lemon zest: from 1 large lemon
• 1 ½ cups (200 g) fresh blueberries: rinsed and patted dry

Crumble Topping

• 3 tbsp cold unsalted butter: diced small
• ⅓ cup (40 g) all-purpose flour
• 3 tbsp granulated sugar
• 1 tsp lemon zest

Variations / Substitutions

• Swap blueberries for raspberries: they work just as well, though they break down a little more during baking
• Use frozen blueberries: do not thaw them; toss with a teaspoon of flour and fold in straight from the freezer
• Make orange lemon loaf: replace lemon zest and juice with orange for a mellower citrus note
• Bake as muffins: divide batter into a greased 12-cup muffin tin and check at 18 minutes

Soft & Chewy Sourdough Peanut Butter Cookies make a lovely sweet pairing for this bread.

How to Make Lemon Blueberry Sourdough Bread

Step 1: Mix the Wet Batter

Preheat your oven to 350°F (180°C) and line a 9×5 inch loaf pan with parchment paper, leaving some overhang on the long sides. In a large bowl, whisk together the ½ cup melted butter, ¾ cup sugar, and 2 eggs until smooth and slightly lightened, about 30 seconds. Add the 1 tsp vanilla, 1 cup sourdough discard, ¼ cup milk, 2 tbsp lemon juice, and 1 tbsp lemon zest, then whisk again until everything is evenly combined with no streaks of discard.

The mixture will be pale and a little loose, that’s exactly what you want. The discard thins it out, so it pours easily into the dry ingredients later.

Step 2: Whisk the Dry Ingredients

In a separate medium bowl, whisk together the 1 ½ cups flour, 2 tsp baking powder, and ½ tsp salt until the baking powder is evenly distributed. This keeps the loaf from having bitter pockets of leavening.

You’re looking for a uniform, fluffy dry mix with no lumps. A quick 15-second stir usually does it.

Step 3: Fold in the Blueberries and Build the Batter

Pour the wet mixture into the dry ingredients all at once. Use a rubber spatula to fold them together gently, stopping just as the flour disappears. A few faint streaks of flour are fine. Tip in the 1 ½ cups blueberries and fold them in with as few strokes as possible, you want the berries to stay whole.

Be patient here, overmixing makes the loaf tough. The batter will be thick but scoopable, with berries held in place.

Step 4: Make the Crumble Topping

In a small bowl, work the 3 tbsp cold butter into the ⅓ cup flour and 3 tbsp sugar using your fingertips. Pinch and rub until the mixture looks like damp sand with a few pea-sized lumps. Toss in the 1 tsp lemon zest and give it one last quick mix.

Scrape the batter into the prepared loaf pan and smooth the top with the spatula. Scatter the crumble evenly over the surface, pressing a few of the larger pieces in lightly so they stick during baking.

Step 5: Bake the Loaf

Slide the pan onto the center rack and bake for 50 to 55 minutes. The top should be deeply golden and the crumble will look dry and set. A toothpick inserted near the center should come out with just a few moist crumbs clinging to it, but no wet batter.

If the crumble is browning too fast before the loaf is done, lay a piece of foil loosely over the top after 40 minutes. The loaf will still have a slight jiggle when you tap the pan, but it firms up as it cools.

Step 6: Cool and Slice the Bread

Let the loaf rest in the pan on a wire rack for 15 minutes. This step keeps it from falling apart when you lift it. Run a knife around the short edges, then use the parchment handles to lift the bread out and onto the rack. Cool until just warm, about 20 more minutes, then slice with a serrated knife.

The crumble will be crisp, the crumb soft and flecked with purple, and the kitchen will smell like lemon and butter. Serve each slice warm, with a smear of salted butter if you like.

Tips for a Tall, Tender Loaf

• Tossing the blueberries with a tablespoon of flour before folding them into the batter helps suspend them in the loaf instead of sinking to the bottom.
• Room temperature eggs and milk mix more smoothly into the butter and sugar, so pull them from the fridge about 30 minutes ahead if you can.
• Don’t slice the bread until it’s only slightly warm to the touch, cutting too soon will tear the crumb and release a lot of steam.
• If your discard is very stiff (like a stiff starter), add an extra tablespoon of milk to the wet mix to reach the same thick, pourable consistency.

Bake times by pan:

Storing Leftovers

• Refrigerate: Wrap the cooled loaf tightly in plastic or store in an airtight container and keep it in the fridge for up to 5 days. The crumb stays moist and the tang from the sourdough becomes a little more pronounced.
• Freeze: Wrap individual slices or the whole loaf in a layer of plastic then foil, and freeze for up to 2 months. Thaw at room temperature or warm slices in a 300°F oven for 10 minutes.
• Serve Cold: This loaf is lovely at room temperature, straight from the fridge, or lightly toasted so the crumble re-crisps.

What to Serve with Lemon Blueberry Sourdough Bread

A thick slice with coffee or tea makes a lazy breakfast feel intentional. It’s also great alongside a bowl of yogurt and honey for a more substantial morning. For dessert, warm a slice and top it with a scoop of vanilla ice cream, the cold cream melts into the warm crumb and mixes with the lemon and berry juices.

Frequently Asked Questions

Can I use active sourdough starter instead of discard?

Yes, active starter works the same way, but the tang will be milder. The loaf won’t rise much differently since baking powder does the heavy lifting.

Why did my blueberries sink to the bottom?

They likely were too wet or the batter was too thin. Coating them in flour and using fresh, dry berries helps them stay suspended.

Can I make this without the crumble topping?

Absolutely. Skip the topping and sprinkle a tablespoon of granulated sugar over the batter before baking for a thin, crackly crust.

What if I don’t have enough discard?

You can cut the recipe down slightly, but don’t replace discard with more milk, it needs the acidity and thickness for the texture. Use what you have and scale the other wet ingredients proportionally.

How do I know when the loaf is done if my toothpick comes out with berry juice?

Look for a toothpick that comes out with moist crumbs but no shiny batter. If you hit a blueberry, try another spot. The top should be firm when pressed lightly.

Lemon Blueberry Sourdough Bread Recipe

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 55 minutes mins

Total Time 1 hour hr 10 minutes mins

Servings: 10 servings

Calories: 270

Ingredients Method Notes

Ingredients

  

• 1 ½ cups (190 g) all-purpose flour
• 2 tsp baking powder
• ½ tsp salt
• ½ cup (113 g) unsalted butter, melted
• ¾ cup (150 g) granulated sugar
• 2 large eggs
• 1 tsp vanilla extract
• 1 cup (240 g) sourdough discard
• ¼ cup (60 ml) whole milk
• 2 tbsp lemon juice
• 1 tbsp lemon zest
• 1 ½ cups (200 g) fresh blueberries
• 3 tbsp cold unsalted butter, diced
• ⅓ cup (40 g) all-purpose flour
• 3 tbsp granulated sugar
• 1 tsp lemon zest

Method

 

1. Preheat oven to 350°F (180°C). Line a 9×5 loaf pan with parchment. Whisk melted butter, sugar, and eggs, then add vanilla, discard, milk, lemon juice, and zest.
2. Whisk flour, baking powder, and salt in a separate bowl.
3. Fold wet into dry until just combined, then gently fold in blueberries.
4. Make crumble by rubbing cold butter into flour and sugar with your fingers, then mix in lemon zest. Scatter over the batter in the pan.
5. Bake 50–55 minutes until golden and a toothpick comes out with moist crumbs. Cool in pan 15 minutes.
6. Lift loaf out using parchment, cool on a rack until just warm, then slice.

Notes

If you use frozen blueberries, keep them frozen and toss with an extra teaspoon of flour before folding in. The loaf will need an extra 5 minutes of bake time.