Cinnamon Swirl Sourdough Bread

This cinnamon sourdough bread bakes up with a soft, pillowy crumb and a dark swirl of cinnamon sugar that runs through every slice. It is the kind of loaf that fills the house with a warm, spiced smell and disappears before it has fully cooled.

The enriched dough gets its gentle tang from a lively sourdough starter, which balances the sweet, buttery filling perfectly. Most of the time is hands off, you mix, fold, and let the dough do the work, so it fits right into a relaxed weekend bake.

What Makes This Loaf So Good

Sourdough gives the bread a complexity that a plain yeast loaf cannot match. That subtle acidity keeps the sweetness from feeling flat, and the crumb stays tender for days.

Enriching the dough with butter and buttermilk makes each slice soft and moist, even after the first day. The filling gets a thin, even layer of cinnamon sugar that melts into distinct spirals without turning gummy.

The method is simple once you know a few tricks. You roll, fill, and roll again, and the result looks like something from a bakery window.

Ingredients

• 1 cup active sourdough starter (100% hydration): feed it 4 to 6 hours ahead until bubbly and doubled
• ¾ cup buttermilk, at room temperature: or regular milk with 2 teaspoons lemon juice, rested 10 minutes
• 1 large egg, at room temperature: cold egg may cool the dough and slow the rise
• 4 tbsp unsalted butter, melted and slightly cooled: plus more for the pan
• 3 cups bread flour: all-purpose works, but bread flour gives the loaf more structure
• ¼ cup granulated sugar: adds just a touch of sweetness to the dough
• 1 tsp fine sea salt: balances the flavor
• For the filling:
• ⅓ cup packed dark brown sugar: light brown sugar works too
• 1 tbsp ground cinnamon: fresh, fragrant cinnamon makes a big difference
• 3 tbsp unsalted butter, very soft: it must spread easily without tearing the dough

Variations and Swaps

• Swap the brown sugar: coconut sugar or maple sugar works, the filling will be slightly less moist and darker.
• Add crunch: sprinkle ½ cup toasted chopped pecans or walnuts over the cinnamon sugar before rolling.
• Make it dairy free: use oat milk plus vinegar for the buttermilk and a good vegan butter stick in the dough and filling.
• Add whole grains: replace up to half the bread flour with whole wheat flour for a nuttier, heartier bread.

If you enjoy this loaf, try a Classic Sourdough Sandwich Bread for a simpler everyday sourdough.

How to Make Cinnamon Sourdough Bread

Step 1: Mix the Dough

In a large bowl, whisk together the 1 cup starter, ¾ cup buttermilk, 1 egg, and 4 tbsp melted butter until smooth. Add the 3 cups bread flour, ¼ cup sugar, and 1 tsp salt, and stir with a spatula just until a shaggy dough forms and no dry flour remains. Turn the dough onto a lightly floured surface and knead by hand for about 8 to 10 minutes, until it feels smooth and elastic.

The dough should be supple and only slightly tacky, not sticky. If it sticks too much, dust with a tablespoon of flour at a time. It will look rough at first but smooth out as you knead.

Step 2: Bulk Ferment the Dough

Place the dough in a clean, lightly greased bowl, cover with a damp towel or plastic wrap, and let it rise at room temperature for 4 to 5 hours, until nearly doubled. During the first 90 minutes, give the dough three sets of stretch and folds. With wet hands, grab one side of the dough, stretch it up, and fold it over the top, rotating the bowl each time.

The dough is ready when it looks puffy and a fingertip pressed gently into the surface leaves an indent that springs back slowly. Warmer kitchens will speed this up, cooler ones slow it down, so rely on the look rather than the clock.

Step 3: Roll Out and Fill the Dough

Punch down the dough and turn it onto a very lightly floured work surface. Roll it into a rectangle about 9 by 13 inches (23 by 33 cm). Spread the 3 tbsp very soft butter evenly over the entire surface, leaving a ½-inch border on all sides. Stir the ⅓ cup brown sugar and 1 tbsp cinnamon together, then sprinkle the mixture over the buttered dough and press it lightly so it sticks.

Starting from a short side, roll the rectangle into a tight log, pinching the seam to seal. Tuck the ends under slightly and place the log seam side down in a buttered 9×5-inch (23×13 cm) loaf pan. The swirl will be snug against the sides.

Step 4: Proof and Bake the Loaf

Cover the loaf loosely with plastic wrap and let it proof until the dough crests about 1 inch above the rim of the pan, usually 2 to 3 hours. About 20 minutes before it is ready, preheat your oven to 375°F (190°C). Place the pan in the oven and bake for 45 to 50 minutes. The top should be a deep golden brown, and an instant-read thermometer inserted into the center should read between 190°F and 200°F (88°C to 93°C).

If the crust browns too fast, tent it loosely with foil after 30 minutes. That high internal temperature is important, it makes sure the dough around the cinnamon swirl is fully set and not gummy.

Step 5: Slice and Serve

Remove the pan from the oven and cool the bread inside for 10 minutes. Turn it out onto a wire rack and let it cool completely, at least 1 hour. Cutting while warm tears the crumb and smears the swirl, so wait. Use a sharp serrated knife and a gentle sawing motion to slice through the loaf and reveal the spiral.

Serve the slices as they are, or toast them and add a little butter. The cinnamon ribbon will be dark, distinct, and fragrant.

A Few Cinnamon Swirl Tips

• Keep the filling butter very soft but not melted. If it is too firm, it will grab the dough and tear it as you spread.
• Roll the log tightly without pulling. Loose rolling creates air pockets that can make the swirl separate during baking.
• On a chilly day, place the dough in the oven with just the light on to create a gentle warm spot for both rises.
• Use a long serrated knife and a back-and-forth sawing motion rather than pressing straight down. This keeps the slices clean.

Bake times by pan size:

Keeping the Bread Fresh

Store the cooled loaf in an airtight container at room temperature for up to 3 days, or refrigerate for up to 5 days. Single slices reheat beautifully in a toaster or a 300°F (150°C) oven for 10 minutes. To freeze, wrap the whole loaf or thick slices tightly and freeze for up to 2 months. Thaw at room temperature.

Frequently Asked Questions

My starter isn’t very active. Can I still make this?

An active, recently fed starter is key for a good rise. If your starter does not double within a few hours of feeding, give it a few more feedings before you bake.

Can I use all whole wheat flour?

You can swap up to half the bread flour for whole wheat and still get a fairly light loaf. Using all whole wheat will make it denser and more rustic.

Can I double the recipe?

Yes. Divide the dough in half after the bulk ferment, shape two loaves, and bake them side by side. You may need to add 5 extra minutes.

What if I don’t have buttermilk?

Stir 2 teaspoons of lemon juice or white vinegar into ¾ cup of milk and let it sit for 10 minutes. It will curdle slightly and work the same way.

Cinnamon Sourdough Bread Recipe

Print Recipe Pin Recipe

Prep Time 25 minutes mins

Cook Time 50 minutes mins

Total Time 1 hour hr 15 minutes mins

Servings: 12 servings

Calories: 260

Ingredients Method Notes

Ingredients

  

• 1 cup active sourdough starter (100% hydration)
• ¾ cup buttermilk, at room temperature
• 1 large egg, at room temperature
• 4 tbsp unsalted butter, melted and slightly cooled
• 3 cups bread flour
• ¼ cup granulated sugar
• 1 tsp fine sea salt
• ⅓ cup packed dark brown sugar
• 1 tbsp ground cinnamon
• 3 tbsp unsalted butter, very soft

Method

 

1. Whisk together the starter, buttermilk, egg, and melted butter until smooth. Add the flour, sugar, and salt, stir to a shaggy dough, then knead on a floured surface for 8 to 10 minutes until smooth and elastic.
2. Place dough in a greased bowl, cover, and let rise at room temperature for 4 to 5 hours, performing three sets of stretch and folds during the first 90 minutes.
3. Punch down dough, roll into a 9×13-inch rectangle, spread the 3 tbsp soft butter, and sprinkle with the brown sugar and cinnamon mixture. Roll tightly from a short side, seal the seam, and place in a buttered 9×5-inch loaf pan.
4. Cover and proof until dough rises 1 inch above the pan, 2 to 3 hours. Preheat oven to 375°F (190°C) during the last 20 minutes. Bake for 45 to 50 minutes until deep golden and internal temp reaches 190°F to 200°F (88°C to 93°C).
5. Cool in pan 10 minutes, then turn onto a rack and cool completely. Slice with a serrated knife and serve.

Notes

Active hands-on time is short, but the enriched sourdough needs about 6 to 8 hours of rising and proofing. Plan to start in the morning for a loaf ready by late afternoon. For the cleanest swirl, make sure the filling butter is as soft as room-temperature spread.