Chocolate Cake with Chocolate Frosting

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January 6, 2026

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Decadent Chocolate Cake with Luscious Chocolate Frosting: A Step-by-Step Guide

If you’re a chocolate lover, this cake is your dream come true. A rich, moist chocolate cake complemented by a creamy chocolate frosting makes for the ultimate dessert indulgence. Perfect for birthdays, celebrations, or just because—every bite is a slice of heaven. This detailed guide will lead you through creating this delightful treat from scratch, ensuring a cake that’s as beautiful as it is delicious.

Ingredients

For the Chocolate Cake

  • Granulated Sugar: 2 cups (400 grams)
  • All-Purpose Flour: 1¾ cups (210 grams)
  • Unsweetened Cocoa Powder: ¾ cup (63 grams)
  • Baking Powder: 1½ teaspoons (6 grams)
  • Baking Soda: 1½ teaspoons (9 grams)
  • Kosher Salt: 2 teaspoons (6 grams)
  • Eggs: 2 large (100 grams)
  • Buttermilk: 1 cup (227 grams)
  • Vegetable Oil: ½ cup (100 grams)
  • Pure Vanilla Extract: 2 teaspoons (8 grams)
  • Boiling Water or Freshly Brewed Strong Hot Coffee: 1 cup (227 grams)

For the Chocolate Frosting (makes 5 cups)

  • Granulated Sugar: 1½ cups (300 grams)
  • All-Purpose Flour: ¼ cup (30 grams)
  • Cornstarch: 3 tablespoons (21 grams)
  • Kosher Salt: 1 teaspoon
  • Dutch-Processed or Regular Cocoa Powder: 5 tablespoons (26 grams)
  • Milk: 1½ cups
  • Unsalted Butter: 1½ cups (339 grams), room temperature
  • Pure Vanilla Extract: 2 teaspoons (8 grams)
  • Semisweet Chocolate: 3¾ ounces (106 grams), melted and cooled

Instructions

For the Chocolate Cake

  1. Prepare the Oven and Pans: Adjust your oven rack to the middle position and preheat to 350°F (175°C). Spray two 8-inch round cake pans with baking spray and set aside.

  2. Mix the Dry Ingredients: In the bowl of a stand mixer fitted with the paddle attachment, combine the sugar, flour, cocoa, baking powder, baking soda, and salt. Stir on low speed for 30 seconds.

  3. Add Wet Ingredients: Add the eggs, buttermilk, vegetable oil, and vanilla extract to the dry ingredients. Increase the mixer speed to medium and beat for 2 minutes until well combined.

  4. Incorporate the Hot Liquid: Reduce the mixer speed to its lowest setting and slowly add the boiling water or hot coffee. Stir on low for 1 minute until the batter is smooth.

  5. Bake the Cake: Divide the batter evenly between the prepared pans. Bake for 25-35 minutes or until a toothpick inserted in the center comes out clean. Let the cakes cool in the pans on a cooling rack for 10 minutes, then remove from the pans and allow to cool completely on the rack.

For the Chocolate Frosting

  1. Combine Dry Ingredients: In a medium saucepan over medium heat, whisk together the sugar, flour, cornstarch, salt, and cocoa.

  2. Add Milk: Gradually whisk in the milk, ensuring a smooth mixture. Cook while whisking constantly until it reaches a boil.

  3. Thicken and Cool: Reduce the heat to medium-low and continue cooking and whisking until the mixture becomes very thick, about 4-8 minutes. Transfer to a wide bowl, cover with plastic wrap directly on the surface, and let cool completely for about 2 hours.

  4. Beat the Butter: Once the mixture has cooled, fit a stand mixer with the paddle attachment. Beat the room-temperature butter on medium-high speed until it’s light and fluffy, about 5 minutes.

  5. Combine with Chocolate Mixture: Reduce the mixer speed to medium, and add the cooled chocolate mixture and vanilla extract. Beat until well combined.

  6. Incorporate Melted Chocolate: Increase the speed to medium-high and beat until the frosting is light and fluffy, about 3-5 minutes. Add the melted and cooled semisweet chocolate, beating until fully incorporated.

Assembly

  1. Frost the Cake: Once the cakes are completely cool, frost them with the prepared chocolate frosting. Ensure an even layer between the cake layers and on the top and sides.

  2. Serve: Cut into slices and serve. Enjoy the rich flavors and creamy texture!

Tips for Success

  • Plan Ahead: The frosting takes about 2½ hours to make due to the cooling time, so it’s best to start with the frosting before baking the cake.
  • Baking Time Variations: If you’re using different cake pans, adjust the baking times accordingly:
    • 9×13-inch cake: 30-40 minutes
    • 12-cup Bundt cake: 45-55 minutes
    • Cupcakes: 18-25 minutes
  • Storage: Store the cake in an airtight container at room temperature for up to 3 days, in the refrigerator for up to 5 days, or freeze for up to 3 months.

With this guide, you are well-equipped to create a show-stopping chocolate cake that will impress any crowd. Happy baking!

Chocolate Cake with Chocolate FrostingChocolate Cake with Chocolate Frosting

A delicious plate of Chocolate Cake with Chocolate Frosting

Chocolate Cake with Chocolate Frosting

This rich and decadent chocolate cake with chocolate frosting is perfect for any celebration or just a treat for yourself!
Prep Time 30 minutes
Cook Time 35 minutes
Cooling Time 2 hours
Total Time 3 hours
Servings: 12 slices
Course: Dessert
Cuisine: American
Calories: 706

Ingredients
  

For the Chocolate Cake
  • 400 g granulated sugar
  • 210 g all-purpose flour
  • 63 g unsweetened cocoa powder
  • 1.5 tsp baking powder
  • 1.5 tsp baking soda
  • 2 tsp kosher salt
  • 100 g large eggs
  • 227 g buttermilk
  • 100 g vegetable oil
  • 8 g pure vanilla extract
  • 227 g boiling water or freshly brewed strong hot coffee
For the Chocolate Frosting
  • 300 g granulated sugar
  • 30 g all-purpose flour
  • 21 g cornstarch
  • 1 tsp kosher salt
  • 26 g Dutch-processed or regular cocoa powder
  • 355 ml milk
  • 339 g unsalted butter room temperature
  • 8 g pure vanilla extract
  • 106 g semisweet chocolate melted and cooled

Equipment

  • Stand Mixer

Method
 

  1. Adjust oven rack to middle position and preheat oven to 350°F. Spray two 8-inch round cake pans with baking spray. Set aside.
  2. In the bowl of a stand mixer fitted with the paddle attachment, stir the sugar, flour, cocoa, baking powder, baking soda, and salt together on low speed for 30 seconds.
  3. Add the eggs, buttermilk, oil and vanilla; increase speed to medium and beat for 2 minutes.
  4. Reduce speed to the lowest speed and slowly add the boiling water. Stir on low for 1 minute.
  5. Pour the batter evenly between the prepared cake pans and bake for 25-35 minutes or until a toothpick inserted in the middle comes out clean. Cool 10 minutes in the pan on a cooling rack, then remove from the pans. Return the cakes to the cooling rack to completely cool.
  6. Frost the cakes with our Chocolate Frosting or your favorite frosting.
  7. In a medium saucepan set over medium heat, whisk the sugar, flour, cornstarch, salt, and cocoa together.
  8. Slowly add the milk, while whisking briskly, and beat until smooth.
  9. Cook, whisking constantly until mixture boils. Reduce heat to medium-low, and continue cooking and whisking until mixture is very thick, about 4-8 minutes. Transfer the mixture to a wide bowl, and place plastic-wrap directly on the surface of the mixture. Set aside to cool completely, about 2 hours.
  10. Once the mixture has cooled, fit a stand mixer with the paddle attachment and add the butter to mixing bowl. Beat the butter on medium-high speed until lighter in color and fluffy, about 5 minutes.
  11. Reduce speed to medium speed and add the cooled chocolate/milk mixture and vanilla. Beat together, scraping down the inside of the bowl as needed, until incorporated.
  12. Increase the speed to medium-high and beat until frosting is light and fluffy, about 3-5 minutes, scraping down the sides as needed.
  13. Add the melted (and cooled) chocolate, and beat until melted chocolate is incorporated, about 30 seconds.
  14. Frost the cake with the completed chocolate frosting, cut into slices, and serve.

Notes

This icing perfectly complements the cake but requires planning due to cooling time. Start the frosting first, then bake the cake. Store in an airtight container at room temperature for up to 3 days.

A delicious plate of Chocolate Cake with Chocolate Frosting

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CREATED BY POLLY

Polly is the creator of Adrian Recipes, where she shares easy, family-friendly recipes designed for busy home cooks.

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