Red Betty Boop Heart Cake

Featured in: Sweet Spark Treats

This delightful red velvet-style heart cake begins with a vibrant, soft red crumb achieved through a blend of cake flour, cocoa, buttermilk, and red gel coloring, balanced with baking soda and vinegar for a tender texture.

It's then generously adorned with a luscious, tangy cream cheese frosting, made from softened cream cheese, butter, powdered sugar, and vanilla. The artistic touch comes from a crisp dark chocolate Betty Boop silhouette, carefully crafted and placed atop the frosted layers. The entire process involves careful mixing, precise baking in heart-shaped pans, thorough cooling, and meticulous frosting application, culminating in a visually striking and delicious dessert that’s perfect for special occasions.

Updated on Sat, 31 Jan 2026 12:31:00 GMT
Freshly baked Red Betty Boop Heart Cake with vibrant red crumb and dark chocolate silhouette on a white plate. Save
Freshly baked Red Betty Boop Heart Cake with vibrant red crumb and dark chocolate silhouette on a white plate. | fizznib.com

The first time I attempted a heart-shaped red velvet cake, I accidentally used liquid food coloring instead of gel and ended up with a batter that was more sad pink than showstopping red. My kitchen smelled like chocolate and disappointment. But that mistake taught me everything about what makes a red cake truly sing. Now this Betty Boop version has become my go-to for birthdays that need a little extra drama.

I made this for my best friend's thirtieth birthday party last February. She walked in, saw that glossy Betty Boop silhouette sitting proud against the red frosting, and actually gasped. We spent the next hour taking photos and feeding each other messy forkfuls. The cake was almost gone before I remembered to serve the actual ice cream.

Ingredients

  • Cake flour: This lower-protein flour creates that signature velvet crumb that practically melts on your tongue
  • Unsweetened cocoa powder: Just enough to give depth without turning this into a chocolate cake
  • Red gel food coloring: Gel delivers that jaw-dropping red without thinning your batter like liquid does
  • Buttermilk: The acid here activates the baking soda and creates the most tender crumb imaginable
  • Cream cheese: Make sure it is properly room temperature or your frosting will turn into a lumpy mess
  • Dark chocolate: The bitterness balances all that sweetness and creates dramatic contrast against the red

Instructions

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Get your oven ready:
Preheat to 350F and grease two heart-shaped pans with butter then line the bottoms with parchment circles
Whisk the dry team:
In a medium bowl combine sifted cake flour cocoa powder baking powder baking soda and salt until well blended
Cream the butter and sugar:
Beat butter for 1 minute until creamy then gradually add sugar and continue beating for 2 to 3 minutes until the mixture looks pale and fluffy
Add the eggs:
Drop in eggs one at a time beating briefly after each and scraping down the bowl sides to keep everything incorporated
Make it red:
Pour in the red gel vanilla and white vinegar mixing until the batter transforms into that gorgeous uniform red
Alternate your additions:
On low speed add one third of the dry ingredients then half the buttermilk repeating until everything is just combined
The magic moment:
Mix that last teaspoon of vinegar with baking soda watch it foam then gently fold it into the batter for extra lift
Bake the layers:
Divide batter evenly between pans smooth the tops and bake for 25 to 30 minutes until a toothpick comes out clean
Cool completely:
Let the cakes rest in pans for 10 minutes then turn them onto wire racks to cool entirely before frosting
Make the frosting:
Beat room temperature cream cheese and butter until smooth then gradually add powdered sugar vanilla and a pinch of salt
Assemble the cake:
Level the domes if needed spread frosting between layers apply a crumb coat and chill before adding that final smooth layer
Create the silhouette:
Place your Betty Boop stencil under parchment pipe melted dark chocolate over the outline and let it set completely
The grand finale:
Carefully peel the chocolate silhouette from the parchment place it on the frosted cake and add any final decorations
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Slice of Red Betty Boop Heart Cake revealing soft layers and velvety cream cheese frosting on a marble slab. Save
Slice of Red Betty Boop Heart Cake revealing soft layers and velvety cream cheese frosting on a marble slab. | fizznib.com

My niece asked if she could help make the chocolate silhouette and I will never forget her serious concentration as she piped that dark chocolate. When she placed it on the cake she looked so proud like she had just painted the Sistine Chapel. Now she asks to make the Betty Boop cake for every family celebration.

Making Silhouettes Like a Pro

Print your stencil at the exact size you want then tape it under a sheet of parchment paper on a flat surface. The parchment should be completely smooth so your chocolate does not spread into weird blobby shapes. Pipe slowly and steadily following the lines through the paper.

Frosting That Actually Behaves

After applying your crumb coat let the cake chill for at least 15 minutes before the final layer. Cold frosting is much more forgiving and you will not pick up red crumbs into your beautiful white finish. Run your offset spatula under hot water wipe it dry then glide it over the frosting for glasslike smoothness.

Serving and Storage

This cake actually tastes better after sitting overnight in the refrigerator as the flavors meld and the frosting sets into something almost fudgy. Slice with a knife dipped in hot water and wiped clean between cuts for those picture perfect heart servings.

  • Bring the cake to room temperature for 30 minutes before serving so the red velvet texture really shines
  • Leftovers keep beautifully covered in the fridge for up to four days if they last that long
  • The chocolate silhouette can be made days ahead and stored between parchment sheets in an airtight container
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Red Betty Boop Heart Cake decorated with piped frosting swirls and a crisp chocolate heart on a wooden board. Save
Red Betty Boop Heart Cake decorated with piped frosting swirls and a crisp chocolate heart on a wooden board. | fizznib.com

Every time I pull this cake out of the fridge and see that dark silhouette against the bright red frosting I smile. It is just pure fun on a plate.

Cooking Guide

Why is gel food coloring recommended for this cake?

Gel-based food coloring is preferred because it provides a more vibrant red hue without significantly altering the consistency or texture of the cake batter, ensuring a beautiful, intense color.

What is the significance of using room-temperature ingredients?

Using ingredients like butter, eggs, and buttermilk at room temperature is crucial for achieving a smooth, emulsified batter. This promotes an even rise and a more tender, consistent crumb in your baked cake.

How can I achieve a perfectly smooth finish on the cream cheese frosting?

For a professional, smooth frosting surface, you can warm your offset spatula under hot water, wipe it completely dry, and then gently glide it over the frosting. This slight warmth helps to melt the outermost layer of frosting, allowing for a seamless finish.

How should I store leftover cake, and for how long?

To maintain freshness, store any leftover cake in an airtight container in the refrigerator. It will keep well for up to four days, retaining its moisture and flavor.

Can I use something other than dark chocolate for the Betty Boop silhouette?

Yes, you can substitute dark chocolate with white chocolate that has been colored black using oil-based food coloring. This can offer a brighter contrast against the red cake and cream cheese frosting.

Red Betty Boop Heart Cake

Soft red crumb, velvety cream cheese frosting, and a crisp dark chocolate Betty Boop silhouette create a delightful dessert.

Setup duration
30 min
Heat duration
30 min
Complete duration
60 min
Created by Chloe Bennett


Complexity Medium

Heritage American

Output 12 Portions

Nutrition Categories Meat-Free

Components

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 1 teaspoon white vinegar
13 1 teaspoon 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 oz dark chocolate or candy melts, melted
02 Parchment paper
03 Betty Boop heart-shaped stencil

Method

Phase 01

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

Phase 02

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

Phase 03

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

Phase 04

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

Phase 05

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

Phase 06

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

Phase 07

Activate Baking Soda: In a small cup, combine 1 teaspoon vinegar with baking soda, then gently fold into the batter. The mixture will foam slightly—this creates a light crumb.

Phase 08

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

Phase 09

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

Phase 10

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

Phase 11

Assemble and Crumb Coat: If desired, level cake domes with a serrated knife. Place one heart cake layer on a cake board or plate. Pipe or spread an even layer of frosting (about ¾ cup) over the top. Top with the second cake layer, press gently, and refrigerate for 15 minutes to set the crumb coat.

Phase 12

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

Phase 13

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

Phase 14

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

Phase 15

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

Kitchen Tools

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

Sensitivity Guide

Review ingredients carefully for potential allergens and seek professional medical guidance if uncertain.
  • Contains wheat (gluten)
  • Contains eggs
  • Contains dairy (butter, cream cheese, buttermilk)
  • May contain soy (possible in chocolate/candy melts)

Dietary Information (per portion)

Values shown are estimates only - consult healthcare providers for specific advice.
  • Energy: 550
  • Fats: 25 g
  • Carbohydrates: 73 g
  • Proteins: 5 g