Sourdough Discard Blueberry Lemon Sweet Rolls

Bright, tender, and impossible to walk past on a Sunday morning – these sweet rolls turn a cup of sourdough discard into something closer to a bakery case than a science experiment. Fresh lemon zest cuts through a jammy swirl of blueberries, and a thick lemon glaze finishes them while they’re still warm. No overnight cold-proof required: mix, rise, shape, and bake, all in one day.

Why You’ll Love It

• Uses up a full cup of sourdough discard – no waste, no feeding schedule to plan around
• Same-day dough: mix in the morning, eat warm rolls by early afternoon
• Bursting with real blueberries and fresh lemon zest, not artificial flavoring
• A soft, enriched crumb from butter, milk, and egg – more brioche than bagel
• A thick lemon glaze that sets just enough to hold, without going hard

Ingredients

Volume measurements are included for convenience, but they’re approximate – for the most consistent results, weigh your ingredients on a kitchen scale, especially the flour.

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Dough

• Sourdough discard (240 g / 1 cup): unfed straight from the fridge is fine – no need to bring it to room temperature first
• Whole milk, warmed (180 g / ¾ cup): warm to the touch, not hot, or it’ll kill the yeast
• Instant yeast (7 g / 2¼ tsp): gives this dough its same-day rise; the discard is here for flavor and texture, not lift
• Granulated sugar (50 g / ¼ cup)
• Unsalted butter, softened (57 g / 4 Tbsp)
• 1 large egg
• Fine sea salt (7 g / 1¼ tsp)
• Bread flour (480 g / 4 cups): the extra protein gives these rolls structure to hold the fruit filling
• Lemon zest, from 1 large lemon

Blueberry Lemon Filling

• Fresh or frozen blueberries (280 g / 2 cups): if using frozen, don’t thaw first – toss them in frozen so they don’t bleed into the dough
• Granulated sugar (67 g / ⅓ cup)
• Cornstarch (15 g / 2 Tbsp): keeps the filling from turning the dough soggy as it bakes
• Fresh lemon juice (15 g / 1 Tbsp)
• Unsalted butter, melted (28 g / 2 Tbsp): for brushing the dough

Lemon Glaze

• Powdered sugar (120 g / 1 cup)
• Fresh lemon juice (30 g / 2 Tbsp)
• Lemon zest, from 1 small lemon
• Pinch of fine sea salt

Equipment

• Kitchen scale: for weighing ingredients – the most reliable way to get consistent rolls
• Stand mixer with dough hook (or a large bowl and a wooden spoon): kneads the dough to a smooth, elastic texture
• 9×13-inch baking pan: for the rolls’ second rise and baking
• Rolling pin: for rolling the dough into an even rectangle before filling
• Bench scraper or sharp knife: for slicing the rolled log into even rounds
• Zester or microplane: for zesting the lemon

Sample Schedule (Same Day)

Sourdough Discard Blueberry Lemon Sweet Rolls

Tender, same-day sourdough discard sweet rolls swirled with juicy blueberries and fresh lemon zest, finished with a thick lemon glaze while still warm.

Print Recipe

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Prep Time 35 minutes mins

Cook Time 30 minutes mins

Rise Time 2 hours hrs 30 minutes mins

Total Time 3 hours hrs 35 minutes mins

Servings: 12 rolls

Course: Breakfast, Dessert

Cuisine: American

Calories: 265

Ingredients Equipment Method Notes

Ingredients

  

Dough

• 240 g (1 cup) sourdough discard, unfed
• 180 g (¾ cup) whole milk, warmed
• 7 g (2¼ tsp) instant yeast
• 50 g (¼ cup) granulated sugar
• 57 g (4 Tbsp) unsalted butter, softened
• 1 large egg
• 7 g (1¼ tsp) fine sea salt
• 480 g (4 cups) bread flour
• 1 large lemon zest of

Blueberry Lemon Filling

• 280 g (2 cups) fresh or frozen blueberries do not thaw if frozen
• 67 g (⅓ cup) granulated sugar
• 15 g (2 Tbsp) cornstarch
• 15 g (1 Tbsp) fresh lemon juice
• 28 g (2 Tbsp) unsalted butter, melted for brushing the dough

Lemon Glaze

• 120 g (1 cup) powdered sugar
• 30 g (2 Tbsp) fresh lemon juice
• 1 small lemon zest of
• pinch of fine sea salt

Heads up: Some of the links below are affiliate links. As an Amazon Associate, I earn from qualifying purchases. This means if you click and make a purchase, I may earn a small commission at no extra cost to you.

Equipment

• Kitchen scale
• Stand mixer with dough hook (or a large bowl and a wooden spoon)
• 9×13-inch baking pan
• Rolling Pin
• Bench scraper or sharp knife
• Zester or microplane

Method

 

1. Bloom the yeast. In the bowl of a stand mixer, whisk together the warm milk (180 g / ¾ cup) and instant yeast (7 g / 2¼ tsp). Let sit 5 minutes until foamy.
2. Mix the dough. Add the sourdough discard (240 g / 1 cup), sugar (50 g / ¼ cup), softened butter (57 g / 4 Tbsp), egg, salt (7 g / 1¼ tsp), and lemon zest to the bowl. Add the bread flour (480 g / 4 cups) and mix on low with the dough hook until a shaggy dough forms.
3. Knead. Increase to medium speed and knead 8–10 minutes, until the dough is smooth, elastic, and pulls cleanly from the sides of the bowl (it will still stick to the bottom – that’s normal for an enriched dough).
4. First rise. Shape the dough into a ball, place in a lightly greased bowl, cover, and let rise in a warm spot 1½–2 hours, until roughly doubled.
5. Make the filling. While the dough rises, toss the blueberries with sugar (67 g / ⅓ cup), cornstarch (15 g / 2 Tbsp), and lemon juice (15 g / 1 Tbsp) in a bowl. Set aside.
6. Roll out the dough. Turn the dough onto a lightly floured surface and roll into a 12×18-inch rectangle. Brush with the melted butter (28 g / 2 Tbsp), leaving a ½-inch border along one long edge.
7. Add the filling. Spoon the blueberry mixture evenly over the buttered dough, gently pressing the berries in so they don’t roll out.
8. Roll and slice. Starting from the long edge opposite the border, roll the dough into a tight log, pinching the seam to seal. Using a bench scraper or sharp knife, slice into 12 even rolls.
9. Second rise. Arrange the rolls cut-side up in a buttered 9×13-inch pan, cover, and let rise 45–60 minutes, until puffy and touching.
10. Bake. Preheat the oven to 350°F while the rolls finish rising. Bake 28–32 minutes, until golden brown and the centers reach about 190°F.
11. Glaze. Let the rolls cool 10 minutes in the pan. Whisk together the powdered sugar (120 g / 1 cup), lemon juice (30 g / 2 Tbsp), lemon zest, and a pinch of salt until smooth, then pour over the warm rolls.

Notes

I started making these the week our blueberry bush finally produced more than a handful at a time, and they disappeared faster than any loaf I’ve ever pulled out of this kitchen. The lemon zest is non-negotiable for me – it’s what keeps these from tasting like a plain cinnamon roll with fruit dropped in.

The same-day timeline is the whole point here. This isn’t a recipe that asks you to plan a day ahead – the instant yeast does the heavy lifting for rise time, and the discard is along for flavor and a slightly tangy backnote against all that sweetness.

If you only have salted butter on hand, just leave the added salt out of the dough and the glaze.

How to Make It

Tips & Troubleshooting

• Frozen discard works too: thaw it in the fridge overnight, then stir before using – no need to bring it to room temperature.
• Filling too wet: if your blueberries are very juicy, add an extra tablespoon of cornstarch so the filling sets instead of pooling in the pan.
• Rolls unrolling as you slice: chill the log in the freezer for 10 minutes before slicing – it firms the butter and makes cleaner cuts.
• Slow rise in a cool kitchen: set the pan in an oven with just the light on, or near (not on) a warm stovetop – enriched dough rises slower than lean dough.

How to Store

To store: keep glazed rolls covered at room temperature for up to 2 days, or in the fridge for up to 5.

To freeze: freeze unglazed, baked rolls in an airtight container for up to 2 months. Thaw and warm in a 300°F oven for 10 minutes, then glaze just before serving.

Nutrition

Per roll, based on 12 rolls per pan. Estimated from the ingredients used – provided for convenience and not a substitute for a precise calculation.