Cotton Candy Cake Marble

Featured in: Sweet Treats for Every Occasion

This cotton candy cake combines soft, airy cake layers colored pink and blue, swirled together for a playful marbled effect. The cake features light cotton candy flavor folded right into the batter. Once cooled, it's layered and frosted with a creamy, pastel-hued buttercream, then garnished with a cloud of real cotton candy for whimsical flair. The sweetness and tender crumb make it a festive treat perfect for birthdays, celebrations, or any moment in need of a touch of color and nostalgia.

sana kitchen chef
By Sana Sana
Updated on Mon, 08 Sep 2025 16:48:01 GMT
A slice of a colorful cake with a white plate underneath it. Pin it
A slice of a colorful cake with a white plate underneath it. | recipebyme.com

This Cotton Candy Cake brings carnival fun right into your kitchen for birthdays or any day that calls for something truly special. Pillowy vanilla cake is marbled with pretty pastels and scattered with real cotton candy. Every slice tastes like a whimsical celebration.

I made this for my niece’s party and the whole table gasped when I sliced it open. Now she asks for it every year and her friends call it the magic cake.

Ingredients

  • All-purpose flour: gives the cake structure and a soft crumb I always use trusted brands that feel pillowy to the touch
  • Baking powder: ensures a tall and fluffy rise make sure yours is fresh with no clumps
  • Salt: balances all the sweetness choose a fine salt so it dissolves quickly
  • Unsalted butter: provides creamy richness and freshness look for pale yellow blocks
  • Granulated sugar: sweetens the cake without heaviness pure white sugar works best here
  • Egg whites: create airy lift and a pristine white crumb separate carefully so no yolk slips in
  • Vanilla extract: deepens flavor a real vanilla extract gives the warmest aroma
  • Milk: tenderizes and moistens whole milk adds the most richness
  • Cotton candy: chopped into bits gives bursts of melt-in-your-mouth sweetness buy or spin it fresh on the day you bake if you can
  • Pink and blue food coloring: for a carnival swirl choose gel or concentrated drops for the boldest colors
  • Powdered sugar: is the foundation of the dreamy frosting sift for clump-free silkiness
  • More unsalted butter: makes the frosting creamy always use room temperature for easy blending
  • A touch of milk: helps the frosting reach the perfect spreadable texture add a splash at a time to control the thickness

Instructions

Sifting Dry Ingredients:
Whisk flour baking powder and salt together so everything is thoroughly mixed and lump free This ensures even leavening and a soft cake
Creaming Butter and Sugar:
Beat the softened butter with sugar in a big bowl until the mixture looks pale and fluffy This builds air and gives the cake a lighter texture than just mixing by hand
Incorporating Eggs and Vanilla:
Add egg whites one at a time and beat after each so everything is perfectly combined Stir in vanilla for a floral warm base
Mixing the Batter:
Alternate adding dry ingredients and milk starting and finishing with the dry This keeps the batter silky and avoids overmixing for a soft tight crumb
Coloring and Folding Cotton Candy:
Divide batter between two bowls Tint one pink and the other blue with food coloring Gently fold chopped cotton candy into each so there are flecks throughout the cake
Marbling and Swirling:
Pour each colored batter into prepared pans and use a butter knife to gently swirl them You want distinct ribbons so do not over mix
Baking and Cooling:
Bake in a 350 degree oven for 25 to 30 minutes Test with a toothpick it should come out clean Cool in pans briefly then gently invert onto racks to finish cooling
Making and Coloring Frosting:
Beat room temp butter until smooth Add powdered sugar and a splash of milk Keep beating until light and spreadable Divide and tint frosting pink and blue for a playful look
Assembling and Garnishing:
Frost the cooled cakes with swirls of pink and blue Add more cotton candy on top just before serving for the ultimate wow factor It is best to pile the cotton candy right before guests arrive
A slice of a colorful cake with pink, blue, and yellow layers.
A slice of a colorful cake with pink, blue, and yellow layers. | recipebyme.com

My favorite part is folding in the cotton candy because it reminds me of summers at the county fair with sticky fingers and laughing with cousins Nothing brings back childhood quite like that vanilla sugar scent in the air

Storage Tips

This cake keeps soft uncovered at room temp for about two days or up to five days if covered tightly with cling wrap and stored in the fridge Store the cotton candy garnish separately and add right before serving so it stays fluffy and does not melt into the frosting I recommend slicing only as needed to keep the cake extra moist

Ingredient Substitutions

If cotton candy is hard to find you can swap in flavorful sprinkles for a similar playful look For a dairy free version use plant based butter and any non dairy milk with a splash of vanilla Almond extract is a fun twist if you want a deeper candy flavor

Serving Suggestions

This cake is perfect with cold milk or icy lemonade It shines as a birthday showstopper or on a dessert table cut into tiny squares for a sweets buffet I love adding tiny flags or edible glitter to the top for extra sparkle

Cultural and Seasonal Touch

The playful pink and blue theme draws from classic fairground treats so this cake especially suits birthdays and baby showers In summer I sometimes use berry flavored cotton candy or tuck in fresh edible petals for a floral note In winter I might swirl in a little peppermint for a holiday spin

Seasonal Adaptations

Try lemon extract in spring for freshness
Top with pastel mini eggs for Easter
Pile with spun sugar for New Year celebrations

Success Stories

My favorite baking memory of this recipe is seeing my niece with blue and pink frosting all over her face The first time I toted it to a family picnic everyone gathered for a photo with the cake This recipe has traveled to bake sales school birthdays and even a wedding for a couple who met at a fairground

Freezer Meal Conversion

You can bake the cakes in advance wrap cooled layers tightly in plastic and freeze for up to two months Thaw at room temperature before frosting and serving Always add the fresh cotton candy and final decorations the day you plan to serve for best texture and appearance

A slice of a rainbow cake with white frosting.
A slice of a rainbow cake with white frosting. | recipebyme.com

This festive cake is sure to wow everyone at the table and bring back joyful memories. Serve with a flourish and enjoy every bite of this magical treat.

Recipe FAQs

→ How do I achieve a marbled effect in the cake layers?

Divide the batter and color each portion separately. Pour both into the pan and gently swirl with a knife before baking for a marbled look.

→ Can I use store-bought cotton candy?

Yes, store-bought cotton candy works well. Chop it lightly before folding into the batter for even distribution.

→ What food coloring works best for vibrant colors?

Gel food coloring gives bright shades without thinning the batter. Add a little at a time for your desired hue.

→ How should I store the finished cake?

Keep the cake in an airtight container at room temperature for up to two days. Add cotton candy garnish just before serving.

→ Can I make the cake ahead of time?

You can bake the layers and prepare the frosting in advance. Assemble and frost fresh for best results.

→ Why use only egg whites?

Egg whites create a lighter crumb and help maintain pastel cake color without yellowing the batter.

Cotton Candy Cake Marble

Fluffy layers in pink and blue with cotton candy sweetness and creamy frosting in every bite.

Prep Time
30 min
Cook Time
30 min
Total Time
60 min
By Sana: Sana

Category: Desserts & Sweets

Skill Level: Medium

Cuisine: American

Yield: 12 Servings (One 9-inch layered cake)

Dietary Categories: Vegetarian

Ingredients

→ Cake Base

01 2 1/2 cups all-purpose flour
02 2 1/2 teaspoons baking powder
03 1/2 teaspoon salt
04 1 cup unsalted butter, softened
05 1 3/4 cups granulated sugar
06 5 large egg whites
07 2 teaspoons vanilla extract
08 1 cup whole milk
09 1 cup cotton candy, chopped
10 Pink food coloring
11 Blue food coloring

→ Buttercream Frosting

12 4 cups powdered sugar
13 1/2 cup unsalted butter, softened
14 2 to 3 tablespoons whole milk
15 1 teaspoon vanilla extract

→ Decoration

16 Additional cotton candy, for garnish

Steps

Step 01

Preheat oven to 350°F. Grease and flour two 9-inch round cake pans to ensure easy release.

Step 02

In a medium bowl, whisk together the all-purpose flour, baking powder, and salt until evenly combined.

Step 03

In a large mixing bowl, beat the softened butter and granulated sugar with an electric mixer until light and fluffy in texture.

Step 04

Add egg whites one at a time, beating thoroughly after each addition, then stir in the vanilla extract.

Step 05

Alternately add the dry ingredients and the milk to the butter mixture, beginning and ending with the dry ingredients. Mix just until incorporated.

Step 06

Divide the cake batter evenly into two bowls. Tint one portion with pink food coloring and the other with blue. Gently fold 1/2 cup chopped cotton candy into each portion.

Step 07

Transfer both colored batters into the prepared cake pans. Swirl with a knife to create a marbled effect. Bake for 25 to 30 minutes or until a toothpick inserted in the center comes out clean.

Step 08

Cool the cakes in the pans for 10 minutes, then turn out onto wire racks and allow to cool completely before frosting.

Step 09

In a bowl, beat the softened butter until creamy. Gradually add the powdered sugar and vanilla, then add the milk as needed until smooth and spreadable. Divide frosting in half and tint one portion pink and the other blue.

Step 10

Frost the cooled cakes alternately with pink and blue buttercream. Just before serving, garnish the cake with additional cotton candy.

Notes

  1. For best results, add the cotton candy garnish immediately before serving to prevent melting from the frosting.

Required Equipment

  • Stand mixer or electric hand mixer
  • 9-inch round cake pans
  • Mixing bowls
  • Wire racks
  • Measuring cups and spoons
  • Offset spatula
  • Whisk

Allergen Information

Check each ingredient for potential allergens and consult a healthcare professional if needed.
  • Contains eggs, dairy, and gluten.

Nutritional Info (per serving)

This data is provided as a guide and doesn't replace medical advice.
  • Calories: 415
  • Fats: 16 g
  • Carbohydrates: 66 g
  • Proteins: 4 g