This sourdough king cake is a fluffy, sweet treat perfect for festive celebrations. It’s an easy, family-friendly recipe that brings joy and warmth to your holiday gatherings. With its delightful cinnamon filling and colorful icing, this cake is not just delicious but also a fun tradition to enjoy with loved ones.
Table of Contents


Ingredients for Sourdough King Cake
Essential Ingredients
- 250 grams warm water
- 200 grams active sourdough starter
- 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 filling)
- 4 tablespoons unsalted butter (for filling, room temperature)
- 1 tablespoon cinnamon (for filling)
- 1 cup powdered sugar (for icing)
- 1 teaspoon to 1 tablespoon whole milk (for icing)
- Purple, gold, and green sprinkles (for decoration)
Optional Ingredients for Variations
You can experiment with vegan substitutions like plant-based butter and flaxseed eggs. For a twist, consider adding chocolate chips or dried fruit into the filling for a unique flavor explosion.
How to Make Sourdough King Cake
Preparing the Dough
Start by combining warm water and sourdough starter in a small bowl. In another bowl, sift together the flour and sea salt. In a large bowl, cream the unsalted butter, vanilla extract, and organic cane sugar until the mixture is light and fluffy. Incorporate the eggs thoroughly, then mix in the warm water and sourdough starter until smooth.
Making the Filling
While the dough is resting, prepare the filling. Use a hand mixer to combine the room temperature butter, brown sugar, and cinnamon until well blended. The aroma of cinnamon will make your kitchen feel cozy and inviting.
Shaping the Cake
After letting the dough rest for an hour, stretch and fold it into a smooth ball. Cover it and let it rise at room temperature for about 2 hours, until it nearly doubles in size. Next, roll the dough into a rectangle on a floured surface, about 15×10 inches, and spread the cinnamon filling evenly over it. Roll the dough tightly from the longer side to form a log, then connect the ends to create a circle in the lined baking pan.
Baking the Cake
Allow the shaped dough to rise for 1 to 2 hours until it puffs up beautifully. Preheat your oven to 375°F (190°C) and bake for 40 minutes, or until the cake is golden brown and fragrant. Let it cool for 2 to 3 hours before icing.
Icing and Decorating
For the icing, mix powdered sugar with milk to achieve your desired thickness. Spread or drizzle this sweet icing over the cooled cake and sprinkle with festive decorations while the icing is still wet for that perfect finish.
Tips for Perfect Sourdough King Cake
Ensuring Your Sourdough Starter is Active
Make sure your sourdough starter is active and bubbly before starting. For an extra boost, mix in a teaspoon of instant yeast to enhance the rise.
Vegan Substitutions
If you prefer a vegan option, substitute eggs with flaxseed meal and use plant-based butter in the dough and filling. Royal icing should be made with whole milk for the best results, but you can find starch-based recipes for a vegan icing alternative.
Storage Suggestions
This cake is best enjoyed fresh, but if you have leftovers, refrigerate them to maintain taste and texture. Reheat slices gently in the microwave for a warm treat.
What is the King Cake Tradition?
Historical Significance
The king cake tradition dates back centuries, originally linked to the Christian celebration of Epiphany. Traditionally, a small figurine or bean is hidden inside, and the person who finds it is crowned king or queen for the day.
Celebrating with King Cake
In many cultures, especially during Mardi Gras, king cakes are a symbol of festivity and joy. Sharing this cake with family and friends is a delightful way to embrace the season.
FAQs
What ingredients do I need for a sourdough king cake?
To make a sourdough king cake, you’ll need warm water, active sourdough starter, organic cane sugar, eggs, unsalted butter, sea salt, vanilla extract, organic bread flour, brown sugar, cinnamon, powdered sugar, whole milk, and colorful sprinkles for decoration.
How do I incorporate sourdough starter into my king cake recipe?
Incorporate the sourdough starter by mixing it with warm water at the beginning of the recipe. This ensures that the yeast in the starter activates and helps the dough rise.
What are some tips for achieving the perfect texture in sourdough king cake?
Ensure your sourdough starter is very active, knead the dough well but don’t overwork it, and allow for proper rising times to achieve a moist and fluffy texture.
Can I make a sourdough king cake ahead of time?
Yes, you can prepare the dough and let it rise in the refrigerator overnight for a more developed flavor. Bake it the following day for a fresh treat.
What variations can I try for a unique sourdough king cake?
Consider adding chocolate chips, dried fruits, or different spices to the filling. You can also experiment with flavored icing or different types of sprinkles for decoration.
Related Recipes to Try
Conclusion
This sourdough king cake is more than just a dessert; it’s a delightful way to embrace tradition and bring family together. As you bake, remember to check out great ideas on Pinterest for even more festive inspiration. Enjoy every bite!

Sourdough King Cake
Equipment
- mixing bowls
- hand mixer
- Baking pan
- parchment paper
- Rolling Pin
Ingredients
- 250 grams warm water
- 200 grams active sourdough starter
- 100 grams organic cane sugar
- 2 organic eggs 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 filling
- 4 tablespoons unsalted butter for filling, room temperature
- 1 tablespoon cinnamon for filling
- 1 cup powdered sugar for icing
- 1 teaspoon to 1 tablespoon whole milk for icing
- purple, gold, and green sprinkles for decoration
Instructions
- Combine warm water and sourdough starter in a small bowl, then sift flour and salt in another bowl.
- Cream together butter, vanilla, and sugar until light and fluffy, then incorporate eggs.
- Mix in the warm water and sourdough starter until smooth.
- Add the flour and salt, kneading until a rough dough forms.
- Let the dough rest for one hour, then stretch and fold into a smooth ball.
- Cover and let rise for about 2 hours until nearly doubled in size.
- Optionally, refrigerate overnight for longer fermentation.
- Prepare the filling by mixing butter, sugar, and cinnamon.
- Line a baking pan with parchment paper and sprinkle with flour.
- Roll the dough into a rectangle (about 15×10 inches) on a floured surface.
- Spread the filling evenly over the dough.
- Roll the dough tightly from the longer side into a log shape and transfer to the pan, forming a circle.
- Allow to rise for 1 to 2 hours until puffed.
- Preheat the oven to 375°F and bake for 40 minutes until golden brown.
- Cool for 2 to 3 hours before icing.
- Mix powdered sugar with milk to create icing, adjusting for thickness.
- Spread or drizzle icing over the cooled cake and add sprinkles.




