Pumpkin Spice Swirl Harvest Boule
A plain sourdough boule is already good. Roll a restrained pumpkin and cinnamon filling into the dough and coil it into a spiral, and it turns into something you want to put on a table in October. The spice level here stays in the background on purpose, so the sourdough still gets to do its job.
This is a lean dough, not an enriched one. The only fat comes from a tablespoon of butter in the filling, so the crumb stays close to what you get from the Plain Sourdough Loaf. The swirl is the main event, and a sunburst score on top makes the shaping effort visible before you even slice it.
Which one is this?Compare all 9 decorative boule recipes
These 9 decorative boule recipes are close cousins. Here is how they differ, so you can pick the right one.
- Wheat Stalk Scored15 hr 15 min · Makes 12 slices
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- Snowflake Scored17 hr 15 min · Makes 12 slices
A scored snowflake pattern on a bread flour and whole wheat dough.
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- Painted17 hr 15 min · Makes 12 slices
A painted design on a bread flour and whole wheat dough.
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- Dough Applique Flower Bouquet17 hr 25 min · Makes 12 slices
Baked dough flowers on top of a bread flour and whole wheat loaf.
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- Marbled Beet and Turmeric Swirl17 hr 20 min · Makes 12 slices
Colored dough swirled through a bread flour loaf.
You want a loaf that shows its color when sliced.
- Black Cocoa Jack-o'-Lantern18 hr 20 min · Makes 12 slices
Black cocoa dough with a jack-o'-lantern design, made with bread flour.
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- Pumpkin Spice Swirl HarvestYou are here17 hr 15 min · Makes 1 loaf
A pumpkin spice swirl in a dough of bread flour and cornstarch.
You want an autumn swirl loaf.
- Ube Coconut18 hr 40 min · Makes 1 loaf
Dough colored with ube extract and ube powder, scored in a leaf vein pattern with a toasted coconut crust.
You want a purple loaf with a toasted coconut crust.
Why You’ll Love It
- A spiral shape that looks complicated and is really just one roll and one coil
- A restrained pumpkin and cinnamon filling that complements the sourdough instead of covering it up
- An overnight cold proof, so the actual bake happens whenever you are ready for it
- A sunburst score that forgives a shaky hand, since the lines radiate outward instead of needing to be perfectly straight. My sourdough scoring patterns guide covers more designs and how deep to cut them.
- Built for a hot, humid kitchen, with fermentation times that assume your dough is moving faster than a recipe written for a colder climate
Ingredients
Volume measurements are included for convenience, but weigh the flour if you can. Pumpkin puree varies enough in moisture from can to can that a scale is the only way to know you have the hydration you planned for.
I suspect the cornstarch looks unnecessary until you leave it out. It keeps the pumpkin filling from turning the inner layer of dough gummy as it bakes, which is the main way a swirl loaf goes wrong.
- Bread flour (500 g / about 4 cups): Gives the dough enough structure to hold a coiled shape through the final proof.
- Lukewarm water (350 g / about 1½ cups): Keeps hydration around 70 percent, workable enough to roll thin without tearing.
- Active sourdough starter (100 g / about ½ cup): Fed 4 to 6 hours earlier and bubbly, not flat.
- Fine sea salt (10 g / about 1¾ tsp): A standard 2 percent for flavor and dough strength.
- Canned pumpkin puree, unsweetened (90 g / about ⅓ cup): The base of the filling. Check the label, pumpkin pie filling already has sugar and spice added and will throw off the recipe.
- Light brown sugar (60 g / about ¼ cup packed): Sweetens the filling and helps it caramelize slightly against the hot dough.
- Ground cinnamon (2 g / about 1 tsp): The main spice note.
- Ground ginger (1 g / about ¼ tsp): A small background warmth, not enough to taste on its own.
- Unsalted butter, melted (15 g / about 1 tbsp): Just enough fat to keep the filling from drying out in the oven.
- Cornstarch (6 g / about 1½ tsp): Thickens the filling so it stays in its layer instead of soaking into the dough.
- Raw pepitas, for topping (15 g / about 2 tbsp): Pressed onto the crust after scoring for a little crunch and a harvest look.
Equipment
Gear guides: Sourdough Equipment Guide·Kitchen Scales·Banneton Sizing·Scoring Tools·Storing the Loaf·Pizza Stone vs. Baking Steel·Shop All Picks →
- Kitchen scale: for weighing the flour and the filling ingredients.
- Large mixing bowl: for the dough.
- Bench scraper: to help turn and shape the sticky dough.
- Rolling pin: to roll the dough into an even rectangle before filling.
- Banneton (proofing basket) with cloth liner: holds the coiled shape through the cold proof.
- Dutch oven: traps steam for a better rise and a crisp crust.
- Lame or very sharp, thin blade: for the sunburst score.
- Parchment paper: for transferring the dough into the Dutch oven.
- Small saucepan: for melting the butter.
- Cooling rack: lets the loaf cool evenly so the swirl finishes setting.
Sample Schedule (2-Day)
Day 1
- Mix the dough and rest 30 minutes
- Stretch and fold, then bulk ferment 4 to 5 hours total
- Make the filling, roll and fill the dough, coil into a spiral
- Place in the banneton and refrigerate overnight
Day 2
- Score the sunburst pattern and bake
- Cool completely, at least 2 hours, before slicing
Pumpkin Spice Swirl Harvest Boule
Method
- Mix 350 g lukewarm water with the starter, then add the flour and salt and mix into a shaggy dough. Cover and rest 30 minutes.
- Stretch and fold 4 times over 2 hours, resting 30 minutes between folds, then bulk ferment 2 to 3 hours more until risen about 40 percent.
- Whisk the pumpkin puree, brown sugar, cinnamon, ginger, melted butter and cornstarch into a thick paste.
- Turn the dough out, roll into a 14×10 inch rectangle, and spread the filling to within 1 inch of the edges.
- Roll into a tight log from the long edge, then coil into a spiral, tucking the tail underneath.
- Place seam-side down in a floured banneton, dust with flour, cover, and refrigerate overnight, 10 to 12 hours.
- Preheat a Dutch oven to 450°F for 30 minutes. Score a sunburst pattern, press pepitas onto the crust, and bake covered 25 minutes, then uncovered 15 to 20 minutes.
- Cool completely on a rack, at least 2 hours, before slicing.
Notes
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How to Make It
1Mix the dough. Combine 350 g lukewarm water with the starter until it dissolves, then add the flour and salt and mix into a shaggy, slightly sticky dough. Cover and rest 30 minutes. In a hot kitchen the starter will already smell active and a little tangy. If the dough feels stiff and dry rather than tacky, add a splash more water a tablespoon at a time.
2Build strength with folds and bulk ferment. Do 4 rounds of stretch and fold over the first 2 hours, resting 30 minutes between each, then let the dough rise undisturbed for 2 to 3 more hours. You are looking for a dome that has grown by about 40 percent and jiggles slightly when you nudge the bowl, not a dough that has doubled. In a South Florida kitchen running warm, this whole stage can move noticeably faster than the times above, so check the dough rather than the clock.
3Make the pumpkin swirl filling. Whisk the pumpkin puree, brown sugar, cinnamon, ginger, melted butter and cornstarch together until you have a thick, spreadable paste with no lumps of cornstarch left. It should hold its shape on the back of a spoon rather than pour. Set it aside at room temperature so it stays easy to spread later.
4Roll and fill. Turn the dough onto a lightly floured counter and pat or roll it into a rough rectangle about 14 by 10 inches. Spread the filling in an even layer to within an inch of every edge, leaving that bare border so the filling does not squeeze out and seal the seam when you roll. Work quickly here, a thin, even layer of filling swirls more cleanly than a thick one that gets pushed around as you roll.
5Roll and coil. Starting from one long edge, roll the dough into a tight log, pinching the seam closed. Coil the log into a spiral on the counter, tucking the tail end underneath the coil so it does not unravel in the oven. This is the one step where your hands do the actual shaping, and the tighter the coil, the more defined the finished spiral pattern will be.
6Final proof. Place the coil seam-side down into a well-floured banneton or a bowl lined with a floured cloth, dust the top with flour, and cover. Refrigerate overnight, 10 to 12 hours. The cold slows fermentation enough that the spiral holds its shape instead of relaxing into a flatter loaf, which matters more here than it does for a plain boule.
7Score and bake. Preheat your oven with a Dutch oven inside to 450°F for 30 minutes. Turn the dough out onto parchment, score a sunburst pattern radiating out from the center of the spiral, and press the pepitas onto the exposed crust around the edge. Bake covered for 25 minutes, then uncovered for 15 to 20 minutes more, until the crust is a deep amber brown. If the top browns faster than the inside sets, tent it loosely with foil for the last 5 minutes.
8Cool completely. Move the loaf to a rack and let it cool for at least 2 hours before slicing. The pumpkin swirl is still setting as the loaf cools, and cutting in early leaves you with a gummy ring around the filling instead of a clean spiral.
Tips & Troubleshooting
- Filling leaks out during baking: The dough was probably rolled too thin at the edges, or the border was skipped. Leave a full inch of bare dough around the rectangle next time.
- Spiral looks flat instead of defined: The coil likely relaxed too much before baking. A firmer dough and a fully cold proof both help it hold its shape.
- Bottom crust is pale: Your Dutch oven may need a longer preheat, or your oven runs cool. Give it the full 30 minutes before the dough goes in.
- Crumb around the filling feels gummy: The filling was probably mixed without the cornstarch, or the loaf was sliced before it finished cooling.
How to Store
To store: Keep the cooled loaf in a paper or linen bag at room temperature for up to 3 days. The swirl keeps it slightly more moist than a plain boule, so it will not stay crisp quite as long.
To freeze: Slice and freeze for up to 3 months. Toast slices straight from the freezer, the filling warms through at the same time the crust re-crisps.
Nutrition
Nutrition values are estimates per slice and will vary based on exact ingredients used.
195
CALORIES
36
CARBS (G)
5
PROTEIN (G)
3
FAT (G)
2
FIBER (G)
210
SODIUM (MG)
Desi’s Notes
If the coil and the sunburst score feel like more than you want to take on this week, the same filling works rolled into a plain batard with a single straight score down the center. You lose the spiral but keep the flavor.
I went with pepitas on top because they hold their shape and color in a hot oven better than most seeds. A scatter of raw pumpkin seeds works the same way if that is what you have on hand.
This one leans more toward a sweet breakfast bread than a dessert. A thin layer of butter on a warm slice is about as far as I would take it.
Before You Bake
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