Sweet Potato Sourdough Cinnamon Rolls

Quick Answer

• Method: Overnight cold-fermented enriched sourdough dough
• Shape: 12 x 16 inch rectangle, rolled and sliced
• Final proof: 2 to 4 hours until puffy
• Bake: 375 F for 20 to 25 minutes
• Yield: 9 to 12 rolls

Why These Rolls Stay Soft

Mashed sweet potato holds moisture in the dough and adds a subtle natural sweetness. Combined with butter, egg, and sourdough fermentation, the crumb stays pillowy instead of dry.

Proofing Cues

Properly proofed rolls should look expanded, be touching or nearly touching, and feel airy when lightly pressed. If a poke springs back immediately, they need more time. If it stays deeply indented, they are likely overproofed.

Instructions

Step 1: Mix the Dough (Night Before)

In a large bowl (or stand mixer bowl), combine:

• flour
• milk (or kefir)
• mashed sweet potato
• sourdough starter

Mix until combined and let rest for 30 minutes (this helps hydrate the flour). Add:

• sugar
• egg
• salt
• softened butter

Knead until smooth and elastic.

KitchenAid Method:

• 2 minutes on low
• 6–8 minutes on medium

Step 2: Bulk Fermentation

• Let dough rest at room temperature for 1 hour
• Perform 1 stretch and fold (optional, but helpful)
• Cover and refrigerate overnight

Step 3: Shape the Rolls (Next Morning)

• Remove dough and let sit at room temperature for 45–60 minutes
• Roll into a 12×16 inch rectangle

Spread softened butter over dough. In a small bowl, mix:

• brown sugar
• cinnamon
• pinch of salt

Sprinkle evenly over the dough. Roll tightly into a log and slice into 9–12 rolls. Place into a buttered baking dish.

Final Proof

Let rolls rise until noticeably puffy. Time:

• Room temp: 3–4 hours
• Proof setting (Breville): ~2 hours at 75–80°F

What Properly Proofed Rolls Look Like You’re looking for: ✔ noticeably puffed and expanded ✔ rolls touching or nearly touching ✔ dough feels light when pressed ✔ poke test: finger dent slowly springs back

• If it springs back fast → needs more time
• If it stays indented → slightly overproofed

Bake

• Preheat oven to 375°F
• Bake for 20–25 minutes, until lightly golden

Let cool slightly before frosting. Make the Frosting (Optional) Beat together:

• cream cheese
• butter
• powdered sugar
• vanilla

Add a splash of milk or cream if needed for consistency. Spread over warm rolls.

Real-Life Timing Example

Night before:

• 7:00 pm mix dough
• 7:30 pm knead complete
• 8:30 pm stretch and fold,
• 9:00 pm refrigerate.

Morning:

• 8:00 am remove dough,
• 9:00 am shape,
• 9:30 am final proof,
• 12:00 pm bake.

Why You’ll Love This Recipe

• Naturally soft and fluffy from sweet potato
• Light sourdough flavor (not overly tangy)
• Make-ahead friendly (overnight dough)
• Simple ingredients, no complicated techniques
• Kid-friendly + freezer-friendly

Ingredient Notes (Milk vs Kefir vs Buttermilk)

You can use regular milk, milk kefir, or even buttermilk in this recipe. Each slightly changes the flavor:

My favorite: milk kefir → adds depth without overpowering the cinnamon roll flavor.

Tips for Success

• Use fully cooled mashed sweet potato (warm will affect fermentation)
• Dough should feel soft but not sticky
• Don’t rush the final proof—this is what makes them fluffy
• Kefir adds nutrition + better browning due to acidity