Homemade Sourdough King Cake for Mardi Gras Recipe
Introduction
Celebrate Mardi Gras with a festive twist on a classic favorite: Homemade Sourdough King Cake. This recipe blends the tangy depth of sourdough with a sweet cinnamon filling and vibrant icing to brighten any celebration.

Ingredients
- 250 grams warm water
- 200 grams sourdough starter, active and bubbly
- 100 grams organic cane sugar
- 2 organic eggs, room temperature
- 1/2 cup unsalted butter, room temperature
- 10 grams sea salt
- 1 teaspoon vanilla extract
- 650 grams organic bread flour
- 1 cup brown sugar (for the filling)
- 4 tablespoons butter, room temperature (for the filling)
- 1 tablespoon cinnamon (for the filling)
- 1 cup powdered sugar (for icing)
- 1 teaspoon to 1 tablespoon whole milk (for icing)
- Purple, gold and green sprinkles and/or other toppings
Instructions
- Step 1: In a small mixing bowl, combine the warm water and active sourdough starter. In a separate bowl, sift together the bread flour and sea salt.
- Step 2: In a large mixing bowl, use a hand mixer to cream the unsalted butter, vanilla extract, and organic cane sugar until light and fluffy.
- Step 3: Add the eggs to the butter mixture and blend well until fully incorporated.
- Step 4: Pour in the warm water and sourdough starter mixture, mixing until smooth, with a consistency similar to pancake batter.
- Step 5: Scrape down the sides of the bowl, then add the flour and salt mixture. Knead the dough until it forms a rough ball.
- Step 6: Let the dough rest for one hour, then stretch and fold it into a smooth, tight ball.
- Step 7: Cover the dough and allow it to rise at room temperature (about 78°F) for approximately 2 hours, or until it nearly doubles in size.
- Step 8 (Optional): For a slower fermentation and better filling consistency, refrigerate the dough overnight before shaping.
- Step 9: Prepare the cinnamon filling by mixing together the softened butter, brown sugar, and cinnamon using a hand mixer until smooth.
- Step 10: Line a large baking pan with parchment paper and lightly dust with flour.
- Step 11: Sprinkle flour over the risen dough, remove it from the bowl, and gently stretch it into a 15 by 10 inch rectangle on a floured surface, keeping it fluffy.
- Step 12: Evenly spread the cinnamon filling over the dough rectangle.
- Step 13: Roll the dough tightly along the longer side to form a long log, then transfer it to the prepared baking pan.
- Step 14: Connect the ends of the log to form a large circle or oval shape.
- Step 15: Let the shaped dough rise for 1 to 2 hours until puffed. If filling leaks out, baste the cake with it to keep it moist.
- Step 16: Preheat the oven to 375°F. Bake the King Cake for 40 minutes until golden brown, basting with any leaked filling halfway through baking.
- Step 17: Allow the cake to cool for 2 to 3 hours until it is cool to the touch.
- Step 18: Prepare the icing by mixing powdered sugar with milk, starting with one teaspoon of milk and adding more slowly until spreadable.
- Step 19: Drizzle or spread the icing over the cooled cake and immediately decorate with purple, gold, and green sprinkles.
Tips & Variations
- Keep an eye on the dough during rising, as the sugar accelerates fermentation compared to typical sourdough bread.
- Refrigerating the dough overnight helps control fermentation and keeps the filling from leaking during shaping.
- For a dairy-free version, substitute butter with coconut oil and use plant-based milk in the icing.
- Try adding chopped pecans or cream cheese to the filling for extra flavor and texture.
Storage
Store the King Cake in an airtight container at room temperature for up to 3 days. For longer storage, wrap tightly and freeze for up to one month. Reheat in a low oven or microwave briefly before serving. Icing may soften after refrigeration but will still taste delicious.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use regular yeast instead of sourdough starter?
Yes, you can substitute 7 grams of active dry yeast for the sourdough starter. Adjust rise times as yeast acts faster than sourdough, typically needing about 1 to 1.5 hours for the first rise.
How can I tell when the dough has properly risen?
The dough should nearly double in size and look visibly puffed and airy. When gently poked with a finger, the indentation should slowly spring back but remain slightly visible.
PrintHomemade Sourdough King Cake for Mardi Gras Recipe
This Homemade Sourdough King Cake is a festive Mardi Gras treat combining the tangy flavor of sourdough with a sweet cinnamon filling and colorful icing. The dough is enriched with butter and eggs, proofed carefully for a light texture, then shaped into a classic King Cake ring. Topped with a powdered sugar glaze and traditional purple, gold, and green sprinkles, this cake celebrates the carnival season with both sourdough depth and vibrant presentation.
- Prep Time: 3 hours
- Cook Time: 40 minutes
- Total Time: 6 hours
- Yield: 1 large King Cake (serves 10-12) 1x
- Category: Dessert
- Method: Baking
- Cuisine: American, Creole
Ingredients
Dough:
- 250 grams warm water
- 200 grams sourdough starter, active and bubbly
- 100 grams organic cane sugar
- 2 organic eggs, room temperature
- 1/2 cup unsalted butter, room temperature
- 10 grams sea salt
- 1 teaspoon vanilla extract
- 650 grams organic bread flour
Filling:
- 1 cup brown sugar
- 4 tablespoons butter, room temperature
- 1 tablespoon cinnamon
Icing and Decoration:
- 1 cup powdered sugar
- 1 teaspoon to 1 tablespoon whole milk
- Purple, gold, and green sprinkles and/or other toppings
Instructions
- Monitor Dough Fermentation: Note that the dough contains sugar, which will accelerate fermentation compared to typical sourdough bread. Adjust rising times based on your kitchen temperature to ensure proper fermentation.
- Combine Liquids and Dry Ingredients: In a small bowl, mix warm water with the active sourdough starter. Separately, sift together organic bread flour and sea salt.
- Cream Butter, Sugar, and Vanilla: Using a hand mixer, beat the unsalted butter, organic cane sugar, and vanilla extract in a large bowl until light and fluffy.
- Add Eggs: Incorporate the room temperature eggs into the creamed mixture, mixing thoroughly for a smooth consistency.
- Incorporate Starter Mixture: Pour the warm water and sourdough starter mixture into the batter, blend until smooth like pancake batter.
- Add Flour and Salt, Knead Dough: Scrape down the bowl, add the sifted flour and salt, then knead the ingredients together until a rough dough ball forms.
- First Rest: Let the dough rest for one hour to relax the gluten structure.
- Stretch and Fold: After resting, stretch and fold the dough into a smooth ball to build dough strength.
- Proof Dough: Allow the dough to rise covered at room temperature (about 78°F) for approximately 2 hours or until nearly doubled in size. Longer proofing times may be required in cooler environments.
- Optional Refrigeration: For improved flavor and easier handling, refrigerate the dough overnight. The cool temperature helps retain the filling better during shaping.
- Prepare Cinnamon Filling: Mix brown sugar, butter, and cinnamon with a hand mixer until well combined and creamy.
- Prepare Baking Surface: Line a large baking pan with parchment paper and sprinkle the surface with flour to prevent sticking.
- Shape the Dough: Flour the dough lightly, transfer to a floured surface, and gently stretch into a 15×10-inch rectangle, maintaining fluffiness.
- Spread Filling: Evenly spread the cinnamon filling over the entire surface of the dough rectangle.
- Roll Dough: Starting with the longer edge, roll the dough tightly into a long log preserving the filling inside.
- Form Ring: Transfer the log to the prepared pan and join ends together to form a large circular or oval King Cake shape.
- Final Proof: Let the shaped dough rise for 1 to 2 hours at room temperature until it puffs up well. Baste any leaking filling back onto the cake with a silicone brush.
- Bake: Preheat the oven to 375°F. Bake the cake for 40 minutes until golden brown. Halfway through, baste with leaked filling for extra moisture and gloss.
- Cool: Allow the cake to cool for 2 to 3 hours until it is cool to the touch before preparing the icing.
- Make Icing: Combine powdered sugar with whole milk starting with 1 teaspoon, adding more until achieving a thick but spreadable glaze.
- Decorate: Spread or drizzle the icing over the cooled King Cake and immediately sprinkle with traditional Mardi Gras colors of purple, gold, and green sprinkles.
Notes
- The sugar in the dough speeds fermentation, so rising times will be shorter than typical sourdough breads.
- Refrigeration of the dough overnight is optional but helps retain the filling and deepen flavor.
- Handle the dough gently when stretching to maintain its airy texture.
- Use a silicone brush during baking to baste any filling leaked from the dough for better moisture and appearance.
- Allow the cake to fully cool before icing to prevent the glaze from melting.
- Adjust milk amount in the icing to reach desired thickness for drizzle or spread.
Keywords: King Cake, Sourdough, Mardi Gras, Cinnamon Filling, Holiday Cake, Festive Dessert, Homemade Bread Cake

