How to Make Chocolate Cake with White Chocolate Frosting

Last Updated on March 15, 2026 by Rita

Chocolate cake with white chocolate frosting is a rich, moist cocoa cake topped with a smooth, creamy white chocolate buttercream, and it comes together in about 40 minutes of baking time plus cooling. This recipe is perfect when you want a soft single-pan chocolate cake with a sweet, silky frosting that balances the deep cocoa flavor.

I love this recipe because it reminds me of the first time I baked a chocolate sheet cake in my tiny Oregon kitchen. I spread the frosting with the back of a spoon and watched it melt gently over the cake.

Today, chocolate cake with white chocolate frosting is still one of my favorite comfort desserts.

If you enjoy rich chocolate desserts, you may also love my Chocolate Cupcakes for Two recipe, which delivers the same deep cocoa flavor in a smaller batch.

Guide to explore in this article

• What this chocolate cake really is
• Key ingredients for the perfect texture
• Step-by-step baking instructions
• Health notes and nutritional insights
• Essential baking tools
• Expert texture tips
• Troubleshooting guide
• Frequently asked questions

What is Chocolate Cake with White Chocolate Frosting?

Chocolate cake with white chocolate frosting is a classic sheet cake made with cocoa powder and topped with a creamy frosting made from melted white chocolate, butter, and powdered sugar. The cake has a deep chocolate flavor, while the frosting adds a sweet and smooth contrast.

This type of cake is often baked in a 9×13 inch pan, which makes it perfect for slicing and serving a crowd. The batter is slightly thin, which helps create a very moist and tender crumb once baked.

The frosting is what makes this dessert special. White chocolate melts into the buttercream and creates a silky texture and delicate vanilla flavor. Unlike traditional chocolate frosting, the white chocolate version is lighter in color and flavor, so the cocoa cake becomes the star.

Many bakers love this cake because it balances richness and sweetness. The cocoa cake uses ingredients like buttermilk, sour cream, and hot coffee to enhance the chocolate taste and keep the crumb soft.

In my kitchen, this cake feels like a reliable comfort bake. I can mix the batter in one bowl, bake it in a simple pan, and frost it generously once it cools. The result is always a soft, sliceable cake with creamy frosting in every bite.

You will often see this combination served at birthdays, potlucks, and family gatherings because it is easy to transport and easy to cut into neat slices.

In short, chocolate cake with white chocolate frosting is a moist cocoa cake paired with a creamy white chocolate buttercream that creates a balanced and indulgent dessert.

If you enjoy classic homemade cakes, you might also like The Best Pumpkin Cake, another soft and comforting dessert.

Key Ingredients for Making Chocolate Cake with White Chocolate Frosting

The magic of chocolate cake with white chocolate frosting comes from a balance of rich cocoa cake and smooth, buttery frosting. Each ingredient plays a specific role in flavor, moisture, and texture.

Below are the key ingredients used in this recipe.

Chocolate Cake Ingredients

I always add hot coffee to chocolate cake batter. It deepens the cocoa flavor without making the cake taste like coffee.

White Chocolate Frosting Ingredients

Ingredient Tips for the Best Results

First, choose high-quality white chocolate. Good white chocolate melts smoothly and tastes creamy instead of waxy.

Next, Dutch-process cocoa powder works best here because it creates a deeper chocolate flavor and darker color.

Finally, the combination of buttermilk and sour cream gives this chocolate cake with white chocolate frosting its signature moist texture.

These ingredients work together to create a soft cocoa cake topped with silky white chocolate frosting that spreads beautifully over every slice.

How to Make Chocolate Cake with White Chocolate Frosting in 7 Steps

Making chocolate cake with white chocolate frosting is simple when you follow a clear step-by-step method. The batter mixes quickly and bakes into a soft cocoa cake that pairs perfectly with creamy white chocolate buttercream.

Step 1 — Prepare the Pan and Oven

First, preheat your oven to 350°F (180°C).

Lightly grease a 9×13 inch (23×33 cm) baking pan, then dust it with cocoa powder. This helps prevent sticking and keeps the cake edges clean when slicing your chocolate cake with white chocolate frosting.

Step 2 — Mix the Dry Ingredients

In a large bowl, sift together:

• 2 cups all-purpose flour
• 1/3 cup Dutch-process cocoa powder
• 2 teaspoons baking soda
• 1 teaspoon baking powder

Next, add 2 cups granulated sugar and whisk everything until evenly combined.

This step ensures the cocoa and leavening ingredients distribute evenly throughout the batter.

Step 3 — Combine the Wet Ingredients

In a separate bowl, whisk together:

• 1/2 cup vegetable oil
• 2 large eggs
• 1 teaspoon vanilla extract
• 2/3 cup buttermilk
• 1/3 cup sour cream

Mix until smooth and the eggs are fully blended.

Then slowly whisk in 1 cup freshly brewed hot coffee. The coffee enhances the cocoa flavor and helps create a deeper taste in the chocolate cake with white chocolate frosting.

Step 4 — Make the Batter

Pour the wet ingredients into the bowl of dry ingredients.

Beat on low speed for about 1 minute, or whisk by hand until the batter becomes smooth.

The batter will look thin, which is completely normal for this moist chocolate cake base.

Step 5 — Bake the Cake

Pour the batter into the prepared pan and spread it evenly.

Bake in the center of the oven for 30–40 minutes.

The cake is ready when:

• the surface looks set
• a toothpick inserted in the center comes out clean or with a few moist crumbs

Allow the cake to cool completely in the pan before adding the frosting.

Step 6 — Prepare the White Chocolate Frosting

Finely chop 6 ounces (160 g) white chocolate and place it in a heatproof bowl.

Microwave on 50% power for 1 minute, then stir. Continue heating in 30-second intervals, stirring each time until fully melted.

Allow the chocolate to cool for about 15 minutes.

In a large bowl:

1. Beat 1 cup softened unsalted butter until smooth.
2. Add 2 cups powdered sugar and 1/2 teaspoon salt.
3. Beat slowly, then increase to medium speed.

Mix in the cooled melted white chocolate.

Finally, beat in 2–3 tablespoons whipping cream, one tablespoon at a time, until the frosting reaches a smooth and spreadable texture.

Step 7 — Frost and Serve

Once the cake is completely cool, spread the frosting evenly over the top using:

• the back of a spoon, or
• an offset spatula

This creates a smooth layer of creamy frosting over the rich cocoa cake.

Your homemade chocolate cake with white chocolate frosting is now ready to slice and serve. Each piece delivers moist chocolate flavor balanced with sweet, silky white chocolate buttercream.

The Health Benefits of Chocolate Cake with White Chocolate Frosting

While chocolate cake with white chocolate frosting is a rich dessert, some ingredients in this recipe offer small nutritional benefits. Enjoyed in moderation, this cake can still fit into a balanced lifestyle.

Cocoa Contains Natural Antioxidants

The cocoa powder used in this recipe provides natural antioxidants called flavonoids. These compounds help support heart health and may contribute to better circulation.

Dutch-process cocoa also delivers a deep chocolate flavor with very little fat, which is why it works so well in a moist cake batter.

Eggs Provide Protein and Nutrients

Eggs help create structure in the cake, but they also provide high-quality protein and important nutrients.

One egg contains:

• Vitamin B12
• Vitamin D
• Choline
• Selenium

These nutrients support energy production and overall health.

Dairy Adds Calcium

Ingredients like buttermilk, sour cream, butter, and whipping cream contribute calcium and small amounts of protein.

Calcium plays an important role in:

• Bone health
• Muscle function
• Nerve signaling

Although the frosting is indulgent, it still includes dairy ingredients that contain these nutrients.

Coffee Enhances Flavor Without Extra Sugar

This recipe includes freshly brewed coffee, which enhances the chocolate flavor naturally.

Because coffee intensifies cocoa taste, bakers can achieve a stronger chocolate profile without needing additional sweeteners. This technique helps balance the sweetness of the white chocolate frosting.

Portion Size Matters

A slice of chocolate cake with white chocolate frosting contains about 497 calories, based on 15 servings.

However, this cake is rich, so many people prefer smaller slices. Cutting the cake into 18 portions or more reduces calories per serving.

Desserts are meant to bring comfort and joy. When enjoyed occasionally, chocolate cake with white chocolate frosting can absolutely be part of a balanced approach to eating.

For a lighter fruit-based dessert option, take a look at No Bake Fruit Tart.

Essential Tools for Making Chocolate Cake with White Chocolate Frosting

You only need a few basic tools to prepare this cake. Simple equipment makes the baking process quick and smooth.

1. 9×13 Inch Baking Pan

A 9×13 inch (23×33 cm) pan helps the cake bake evenly and makes slicing easy.

2. Mixing Bowls

Use two large bowls to separate wet and dry ingredients before mixing.

3. Whisk

A whisk helps combine flour, cocoa, and sugar evenly and prevents lumps.

4. Electric Mixer

A hand or stand mixer creates smooth and fluffy white chocolate frosting.

5. Heatproof Bowl

Use a heatproof bowl to melt the white chocolate safely.

6. Offset Spatula or Spoon

Spread frosting easily using an offset spatula or the back of a spoon.

Quick Tool Summary

Expert Tips for the Best Texture of Chocolate Cake with White Chocolate Frosting

These quick tips help create a soft cake and smooth frosting.

Use Room Temperature Ingredients

Eggs, sour cream, and buttermilk mix better when not cold.

Avoid Overmixing

Mix just until smooth. Overmixing can make the cake dense.

Use Fresh Hot Coffee

Hot coffee enhances cocoa flavor and deepens the chocolate taste.

Cool the Cake Completely

Frosting spreads best on a fully cooled cake.

Choose Good White Chocolate

Use high-quality white chocolate that contains cocoa butter for better flavor.

Adjust Frosting Texture

These small tips help your chocolate cake with white chocolate frosting turn out moist and creamy every time.e it.

If you enjoy chocolate desserts with rich flavor, you may also love Mint Brownies.

Troubleshooting Chocolate Cake with White Chocolate Frosting

Even experienced bakers sometimes run into small issues. The table below helps you quickly solve the most common problems when making chocolate cake with white chocolate frosting.

These simple fixes help ensure your chocolate cake with white chocolate frosting turns out moist, smooth, and perfectly frosted every time.

Frequently Asked Questions About Chocolate Cake with White Chocolate Frosting

Final Thoughts: Why You’ll Love This Chocolate Cake with White Chocolate Frosting

There is something truly comforting about baking chocolate cake with white chocolate frosting. The cake is soft, rich, and full of deep cocoa flavor, while the frosting adds a creamy sweetness that spreads beautifully over every slice.

I especially love how simple this recipe is. Everything comes together in one pan, which means less cleanup and more time to enjoy dessert. In my kitchen, this kind of easy bake always feels like a small celebration.

Whether you are baking for a family gathering, a birthday, or just a cozy evening at home, this cake delivers reliable results and irresistible flavor. One slice is often enough to bring a little extra joy to the table.

If you’re looking for another classic cake recipe, my Moist Carrot Cake is always a reader favorite.

Discover more cozy dessert recipes in minutes, comfort and sweetness await in every mug.

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How to Make Chocolate Cake with White Chocolate Frosting

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Moist chocolate cake topped with creamy white chocolate frosting. This easy sheet cake delivers rich cocoa flavor balanced with smooth white chocolate buttercream.

• Total Time: 55 minutes
• Yield: 15 slices 1x

Ingredients

Units USM Scale 1x2x3x

2 cups all-purpose flour1/3 cup Dutch-process cocoa powder2 teaspoons baking soda 1 teaspoon baking powder 2 cups granulated sugar1/2 cup vegetable oil2 large eggs 2/3 cup buttermilk1/3 cup sour cream1 cup freshly brewed coffee6 oz white chocolate1 cup unsalted butter2–3 cups powdered sugar1/2 teaspoon salt 2–3 tablespoons whipping cream

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Instructions

1. Preheat oven to 350°F (180°C) and grease a 9×13 baking pan.

2. Whisk flour, cocoa powder, baking soda, baking powder and sugar in a large bowl.

3. In another bowl mix oil, eggs, vanilla, buttermilk and sour cream.

4. Whisk hot coffee into the wet mixture.

5. Combine wet and dry ingredients and mix until smooth.

6. Pour batter into prepared pan and bake for 30–40 minutes.

7. Cool cake completely in the pan.

8. Melt white chocolate and allow it to cool for 15 minutes.

9. Beat butter, powdered sugar and salt until smooth.

10. Mix in melted white chocolate and whipping cream until creamy.

11. Spread frosting over the cooled cake and slice to serve.

Notes

Use high-quality white chocolate for the best frosting flavor.

If you don’t have buttermilk, mix milk with 2 teaspoons lemon juice and rest 5 minutes.

Let the cake cool completely before frosting.

Store cake at room temperature for 2 days or refrigerated up to 4 days.

• Author: Rita
• Prep Time: 20 minutes
• Cook Time: 35 minutes
• Category: Cakes
• Method: Baking
• Cuisine: American

Nutrition

• Serving Size: 1 slice
• Calories: 497
• Sugar: 50g
• Sodium: 260mg
• Fat: 26g
• Saturated Fat: 13g
• Unsaturated Fat: 12g
• Trans Fat: 1g
• Carbohydrates: 64g
• Fiber: 1g
• Protein: 4g
• Cholesterol: 66mg

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