Mardi Gras King Cake Donuts

Last February, my roommate Sarah returned from a weekend in New Orleans with powdered sugar still on her scarf and a mission. She spent three weeks trying to recreate the King Cake experience in our tiny Brooklyn kitchen, finally landing on these donuts as the answer.

When I first attempted the swirl technique, I made the rookie mistake of adding too much filling mixture. The cinnamon sugar bubbled up through the batter during baking, creating these beautiful accidental craters that held extra glaze. Sometimes the kitchen mistakes teach you more than the recipes ever could.

Ingredients

• 2 cups all-purpose flour: The foundation of everything, providing structure for those tender donuts that hold up to the swirl
• 1/2 cup granulated sugar: Sweetens the batter just enough to let the cinnamon filling really shine without overwhelming
• 2 tsp baking powder: This is what gives the donuts their lift, creating that perfect airy interior texture
• 1/2 tsp salt: Do not skip this, it balances all the sweetness and makes the flavors pop
• 1/2 cup whole milk: Whole milk creates a richer crumb, though I have used oat milk in a pinch with decent results
• 2 large eggs: Room temperature eggs incorporate better into the batter for an even rise
• 1/4 cup unsalted butter, melted: Adds that buttery richness we all crave in a good baked good
• 2 tsp vanilla extract: Pure vanilla makes all the difference here, imitation just does not have the same depth
• 1 tsp ground cinnamon: This background cinnamon warms up the batter without competing with the swirl
• 2 tbsp unsalted butter, melted: For the cinnamon swirl, helps the brown sugar create that gooey ribbon
• 1/4 cup packed light brown sugar: The molasses in brown sugar caramelizes beautifully as it bakes
• 1 tbsp ground cinnamon: Heavy on the cinnamon in the swirl is exactly what you want here
• 1 1/4 cups powdered sugar: Creates the perfect thick glaze that sets up beautifully
• 2–3 tbsp milk: Adjust this to get your glaze to the perfect pourable consistency
• 1/2 tsp vanilla extract: A touch of vanilla in the glaze ties everything together
• Purple, green, and yellow (gold) sanding sugars: The essential King Cake colors that make these instantly recognizable

Instructions

Get your oven ready:

Preheat oven to 350°F (175°C) and grease your donut pan thoroughly, getting into all those little corners

Whisk the dry ingredients:

In a large bowl, combine flour, granulated sugar, baking powder, salt, and ground cinnamon until everything is evenly distributed

Mix the wet ingredients:

In another bowl, whisk together the milk, eggs, melted butter, and vanilla until smooth and slightly frothy

Combine the batters:

Pour the wet ingredients into the dry and stir gently until just combined, some small lumps are perfectly fine

Make the cinnamon swirl:

In a small bowl, stir together the melted butter, brown sugar, and cinnamon until it forms a paste-like mixture

Layer the donuts:

Spoon half the batter into the donut pan, then add about 1 teaspoon of cinnamon swirl to each cavity before covering with remaining batter

Create the swirl:

Gently run a toothpick through each donut once or twice to marble the cinnamon mixture into the batter

Bake to perfection:

Bake for 10–12 minutes until the donuts spring back when touched and are lightly golden around the edges

Cool them down:

Let the donuts rest in the pan for 5 minutes before carefully transferring to a wire rack

Whisk the glaze:

Mix powdered sugar, milk, and vanilla until smooth and thick enough to coat a spoon

Glaze and decorate:

Dip each cooled donut in the glaze, let the excess drip off, then immediately apply the colored sugars in sections

Let them set:

Allow the glaze to firm up for about 10 minutes before serving, though they are tempting right away

Save

These donuts became my go-to for surprise office birthdays and neighborhood gatherings. There is something about seeing those Mardi Gras colors that instantly puts people in a celebratory mood, no matter the season.

Making Them Dairy-Free

I have tested this with both oat milk and almond milk, using vegan butter sticks in place of dairy. The texture remains surprisingly close to the original, though the richness does shift slightly. Plant-based alternatives work wonderfully here without compromising the spirit of the recipe.

Glaze Consistency Secrets

Start with 2 tablespoons of milk and add the third only if needed. The glaze should be thick enough to coat heavily but thin enough to pour smoothly. Too thick and it will not dip evenly, too thin and it will run right off the donuts.

Storage and Freshness

These donuts are definitely best the first day, but they can be stored in an airtight container for up to 2 days. The cinnamon swirl will continue to infuse the dough as they sit, developing even deeper flavor over time. The glaze may soften slightly but remains delicious.

• Avoid refrigerating as this dries out the crumb and affects the texture significantly
• If you need to make them ahead, bake and glaze the day before, then add the sanding sugar just before serving
• For extra freshness on day two, a quick 10 second zap in the microwave brings back that just baked warmth

Save

Whether you are celebrating Mardi Gras or just need a little color in your morning, these donuts bring joy. Laissez les bons temps rouler, yall.

Recipe FAQs

→ What flavor highlights these donuts?

Cinnamon is the key flavor, infused in a swirl inside the dough and complemented by a sweet vanilla glaze colored in vibrant Mardi Gras hues.

→ How are the donuts baked to achieve the right texture?

The donuts are baked until springy to touch, ensuring a tender yet sturdy crumb that holds the cinnamon swirl well.

→ What decorating technique mimics King Cake stripes?

Sanding sugars in purple, green, and yellow are sprinkled in sections over the glaze to replicate the festive Mardi Gras King Cake stripes.

→ Can dairy alternatives be used in this preparation?

Yes, plant-based milk and butter substitutes can replace dairy ingredients for a dairy-free version without compromising texture.

→ What tools are essential for making these baked treats?

A donut pan, mixing bowls, whisk, measuring tools, toothpick for swirling, and a wire rack for cooling are required for best results.