Red Betty Boop Heart Cake

Featured in: Sunrise Spoonfuls

This heart-shaped creation features tender red velvet-style layers infused with natural cocoa and buttermilk for a soft, moist crumb. The vibrant red batter achieves its signature hue through gel coloring and vinegar activation, creating a light texture that pairs perfectly with the tangy cream cheese frosting.

What makes this special is the crisp dark chocolate Betty Boop silhouette perched atop the creamy white frosting—a playful nod to vintage charm that creates gorgeous visual contrast. The chocolate piece adds a satisfying snap against the smooth frosting, while the red cake delivers that classic sweet-tangy flavor profile red velvet lovers crave.

Perfect for celebrations, romantic occasions, or whenever you want to bake something whimsically impressive. The process takes about 90 minutes from start to finish, with most hands-on time spent on the decorative chocolate silhouette. Room-temperature ingredients are essential for achieving that bakery-perfect texture.

Updated on Wed, 28 Jan 2026 15:57:00 GMT
Finished red Betty Boop heart cake with soft crumb and velvety cream cheese frosting, topped with a crisp dark chocolate silhouette on a white plate. Save It
Finished red Betty Boop heart cake with soft crumb and velvety cream cheese frosting, topped with a crisp dark chocolate silhouette on a white plate. | sunnyspoonful.com

The first time I attempted a Red Betty Boop Heart Cake was for my sister's birthday, who collects vintage cartoon memorabilia. The kitchen smelled like vanilla and cocoa as I mixed that vibrant red batter, wondering if the cartoon silhouette would actually work. My hands trembled slightly while piping the chocolate outline, but when I finally placed that glossy Betty Boop figure onto the cake's velvety surface, I couldn't help but grin at how the playful design transformed a simple dessert into something magical.

Last Valentine's Day, I brought this cake to a friend's dinner party, carrying it carefully through light snow. When I unveiled it at the table, conversation stopped mid-sentence as everyone leaned forward to admire the vintage character silhouette against the heart-shaped red cake. A friend's young daughter kept pointing at Betty Boop, completely mesmerized, while the adults debated who would get the slice with the chocolate decoration. That cake disappeared faster than any dessert I've ever made.

Ingredients

  • Cake flour: After experimenting with different flours, I found cake flour creates that impossibly tender crumb that practically melts on your tongue.
  • Red gel food coloring: The liquid ones left my batter watery and pale, but gel coloring gives that dramatic red without altering the texture.
  • Cream cheese: Full-fat cream cheese creates a frosting with the perfect balance of tanginess and richness, and I learned the hard way that low-fat substitutes can make it runny.
  • Dark chocolate: The slight bitterness in good quality dark chocolate creates a sophisticated contrast against the sweet frosting, making the Betty Boop silhouette both beautiful and delicious.

Instructions

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Prepare your battlestation:
Preheat your oven to 350°F while greasing those heart pans like your cake's life depends on it. The parchment paper lining is non-negotiable unless you enjoy cake stuck to pans, which trust me, I've experienced enough for both of us.
Create the velvet base:
Whisk your dry ingredients in one bowl, then cream that butter until it's practically floating. When you add eggs one by one, you're building the foundation of your cake's texture, so be patient with each addition.
Make it ruby red:
Fold in that gorgeous gel coloring until the batter transforms into a vibrant red sea. This is when the kitchen magic happens as vanilla and cocoa aromas swirl around you.
The secret foam reaction:
That little vinegar-baking soda mixture might seem strange, but it creates tiny air pockets for an exceptionally light texture. Watch it foam and feel like a kitchen scientist for a moment.
Bake with love:
Divide the batter between pans, smoothing tops for even hearts. Your kitchen will fill with the most incredible warm, sweet scent as they bake, signaling the transformation happening inside.
Craft the cloud frosting:
Beat cream cheese and butter until they become one luxurious mixture. The powdered sugar should be added gradually or you'll create a snowstorm in your kitchen, which I've done more times than I care to admit.
Assemble with patience:
That 15-minute chill after placing your first layer is crucial for structural integrity. Think of it as the cake's meditation moment before the final presentation.
Create Betty Boop magic:
Tracing the silhouette with chocolate requires steady hands and faith. I hold my breath during this part, letting the chocolate flow in smooth lines over the parchment.
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Easily spray or drizzle oil for roasting vegetables, air frying, sautéing, and dressing salads with controlled coverage.
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Freshly frosted Betty Boop heart cake displayed on a white plate, the vibrant red layers and dark chocolate character pop beside vintage decor. Save It
Freshly frosted Betty Boop heart cake displayed on a white plate, the vibrant red layers and dark chocolate character pop beside vintage decor. | sunnyspoonful.com

The most memorable moment with this cake happened when I made it for my grandmother's 80th birthday. She grew up during Betty Boop's heyday and hadn't thought about the character in decades. When she saw the cake, she started sharing stories about going to the cinema as a young woman and how Betty Boop was considered quite scandalous then. Four generations sat around the table, eating red velvet cake and listening to Grandma's tales of a different era, all because of a cartoon character made of chocolate.

The Art of the Silhouette

I've found that freezing the parchment paper with the stencil underneath for about five minutes before piping the chocolate creates a more precise outline. The cold surface slows the chocolate's spread just enough to maintain those delicate Betty Boop details, like her distinctive curls and eyelashes. After a particularly frustrating attempt where the chocolate kept spreading and obliterating her features, this trick has saved countless silhouettes and prevented many near-kitchen meltdowns.

Color Psychology

There's something about the contrast of that deep red cake against the stark black silhouette that captures attention like nothing else. When experimenting with different color combinations, nothing matched the visual impact of this classic pairing. I once tried a blue cake with white chocolate Betty for a baby shower, but it lacked the same dramatic presence and vintage feel that makes this version so special.

Serving Suggestions

The temperature of this cake matters more than you might think for the full experience. Serving it completely chilled dulls the flavors, while room temperature brings out the buttery notes and allows the cocoa undertones to shine through the red velvet.

  • For a special presentation, dust the serving plate with a light coating of cocoa powder before placing the cake, creating a subtle frame that enhances the red color.
  • Pair each slice with fresh berries to echo the red theme while providing a tart counterpoint to the creamy frosting.
  • If serving at a party, prepare extra chocolate silhouettes as take-home treats, wrapped in cellophane tied with red ribbon.
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Detailed view of a red Betty Boop heart cake slice, revealing moist crumb and creamy frosting, paired with a cup of coffee. Save It
Detailed view of a red Betty Boop heart cake slice, revealing moist crumb and creamy frosting, paired with a cup of coffee. | sunnyspoonful.com

This cake represents more than just flavors and textures to me. It's become my signature celebration piece, bringing together nostalgia and artistry on a plate that never fails to create a moment of shared joy around the table.

Recipe FAQs

Why is vinegar added to the red cake batter?

The vinegar activates the baking soda, creating tiny bubbles that result in a lighter, tender crumb. It also enhances the red color intensity while balancing the sweetness with subtle tanginess typical of red velvet-style cakes.

Can I make the chocolate silhouette ahead of time?

Absolutely. Prepare the dark chocolate silhouette up to a week in advance and store between sheets of parchment paper in an airtight container at room temperature. Handle gently when transferring to the frosted cake to prevent cracking.

What's the best way to achieve vibrant red color?

Use gel-based food coloring rather than liquid. Gel provides concentrated pigment without altering the batter consistency. Start with 1 tablespoon and add more if needed—the color will deepen slightly during baking.

How do I prevent the cream cheese frosting from becoming too soft?

Ensure both cream cheese and butter are fully at room temperature before beating—this prevents graininess. After applying the crumb coat, chill the cake for 15 minutes before adding the final layer. Refrigerate the finished creation for 30 minutes before serving for clean slices.

Can I substitute the heart-shaped pans?

Yes, two 9-inch round pans work beautifully. You'll lose the heart shape but gain a classic red velvet look. Baking time remains the same. For a playful alternative, bake in one 9x13-inch pan and cut smaller heart shapes from the finished cooled cake.

Why does the batter foam when adding the baking soda mixture?

This chemical reaction is exactly what you want—the carbon dioxide released creates air pockets for a light, fluffy texture. Fold gently to preserve these bubbles, and transfer to pans promptly to bake while the leavening is most active.

Red Betty Boop Heart Cake

Soft red layers with tangy cream cheese frosting topped with a playful dark chocolate silhouette for striking visual contrast.

Prep Time
30 mins
Cook Time
30 mins
Total Duration
60 mins
Authored by Lana Bright

Recipe Type Sunrise Spoonfuls

Skill Level Medium

Cuisine Style American

Recipe Yield 12 Serving Size

Diet Preferences Vegetarian-Friendly

What You'll Need

For the Cake

01 2 ½ cups cake flour, sifted
02 2 tablespoons natural unsweetened cocoa powder
03 1 ½ teaspoons baking powder
04 ½ teaspoon baking soda
05 ½ teaspoon fine sea salt
06 1 cup unsalted butter, room temperature
07 1 ¾ cups granulated sugar
08 4 large eggs, room temperature
09 1 cup buttermilk, room temperature
10 2 tablespoons red gel food coloring
11 2 teaspoons pure vanilla extract
12 2 teaspoons distilled white vinegar

For the Cream Cheese Frosting

01 1 cup cream cheese, room temperature
02 ½ cup unsalted butter, room temperature
03 4 cups powdered sugar, sifted
04 1 tablespoon pure vanilla extract
05 Pinch of salt

For the Betty Boop Silhouette Decoration

01 6 ounces dark chocolate or candy melts, melted
02 Parchment paper
03 Betty Boop heart-shaped stencil

Directions

Step 01

Prepare Cake Pans: Preheat oven to 350°F. Grease two 9-inch heart-shaped cake pans and line the bottoms with parchment paper.

Step 02

Combine Dry Ingredients: In a medium bowl, whisk together cake flour, cocoa powder, baking powder, baking soda, and sea salt. Set aside.

Step 03

Cream Butter and Sugar: In a stand mixer fitted with paddle attachment, beat butter on medium speed for 1 minute until creamy. Gradually add sugar and continue beating for 2-3 minutes until light and fluffy.

Step 04

Incorporate Eggs: Add eggs one at a time, beating on low speed after each addition just until blended. Scrape down bowl sides as needed.

Step 05

Add Color and Flavorings: Stir in red gel food coloring, vanilla extract, and white vinegar until batter is evenly colored.

Step 06

Alternate Wet and Dry Ingredients: With mixer on low, add one-third of dry ingredients, then half of buttermilk, mixing just until incorporated. Repeat with another third of dry ingredients, remaining buttermilk, and finish with final third of dry ingredients. Do not overmix.

Step 07

Activate Leavening Agent: In a small cup, combine 1 teaspoon vinegar with baking soda, then gently fold into batter. The mixture will foam slightly, creating a light crumb.

Step 08

Fill and Bake Cakes: Divide batter evenly between prepared pans, smoothing tops with offset spatula. Bake on center rack for 25-30 minutes, or until toothpick inserted in center comes out clean.

Step 09

Cool Cakes: Let cakes cool in pans for 10 minutes. Run thin knife around edges, then invert onto wire racks and remove parchment. Cool completely before frosting.

Step 10

Prepare Cream Cheese Frosting: In clean mixer bowl, beat cream cheese and butter on medium speed for 2 minutes until smooth. Gradually add powdered sugar and salt, then vanilla extract, beating on low until combined and fluffy. Transfer to piping bag or keep covered in fridge until ready.

Step 11

Layer Cakes: Level cake domes with serrated knife if desired. Place one heart cake layer on cake board or plate. Pipe or spread even layer of frosting (approximately ¾ cup) over top. Top with second cake layer, press gently, and refrigerate for 15 minutes to set crumb coat.

Step 12

Apply Final Frosting: Apply thin crumb coat of frosting over entire cake. Chill for another 10 minutes, then add final smooth layer of frosting. Use offset spatula to create swirls or leave smooth as desired.

Step 13

Create Chocolate Silhouette: Place printed stencil under sheet of parchment. Pipe or brush melted dark chocolate over outline on parchment. Allow chocolate silhouette to fully set at room temperature or in refrigerator for 10 minutes.

Step 14

Apply Silhouette Decoration: Carefully peel chocolate silhouette from parchment and lift onto center of cake. Press gently so it adheres to frosting.

Step 15

Finish and Chill: Decorate cake edges with additional frosting rosettes, edible glitter, or red sugar pearls. Chill cake for 30 minutes before serving to let frosting set. Slice with warm, clean knife for neat hearts.

Tools You'll Need

  • Stand mixer or electric hand mixer
  • Mixing bowls
  • Measuring cups and spoons
  • Two 9-inch heart-shaped cake pans
  • Offset spatula
  • Wire racks
  • Parchment paper
  • Serrated knife
  • Piping bag

Allergy Information

Review each ingredient to identify potential allergens, and consult a healthcare professional if you're unsure.
  • Contains wheat and gluten
  • Contains eggs
  • Contains dairy: butter, cream cheese, buttermilk
  • May contain soy from chocolate or candy melts
  • Always check chocolate or candy melt labels for potential allergens

Nutrition Details (Per Serving)

This nutritional data is for reference only and isn't a substitute for medical advice.
  • Caloric Value: 550
  • Fats: 25 grams
  • Carbohydrates: 73 grams
  • Proteins: 5 grams