Frosted Chocolate Sheet Cake

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This rich chocolate cake is great for any special occasion. The entire cake is coated with a sweet ganache. It is a moist, fluffy frosted chocolate sheet cake that is perfect for birthdays, celebrations, and more!

This is a soft fudgy sponge cake that’s topped with a thick layer of creamy chocolate. The cake isn’t made with chocolate; it is made with cocoa powder. Unlike the Texas sheet cake, this one is made with oil, not butter.

Ingredients and substitutes

• Chocolate – The chocolate you use will determine the ultimate experience you get from this cake. So, always use good quality chocolate that you can eat on its own. You can use any percentage you want. And if you use dark or bittersweet chocolate the cake will have a rich chocolate flavor. I prefer to use 60% Callebaut chocolate for my ganache, but you can also use semi-sweet chocolate chips for this chocolate ganache frosting.
• Flour – I use regular all-purpose flour, plain flour, for most of my cakes. Because it is easily available and usually on hand in most households.
• Oil – While most cakes use unsalted butter, this cake works best with cooking oil. Use flavorless cooking oil like canola, sunflower, or grapeseed.
• Sugar – I’ve used both white and brown sugar. The molasses in the brown sugar contributes to the soft texture, as well as a rich flavor.
• Cocoa powder – I use dutch process unsweetened cocoa powder for this batter. But you can also use regular cocoa powder.
• Eggs – Always use large-size eggs when baking unless specified.
• Buttermilk – You can also use store-bought buttermilk, but you also make your own at home in just five minutes. Yogurt is also a great substitute for buttermilk or sour cream.
• Vanilla – A good quality vanilla goes a long way. I have used vanilla bean paste but vanilla extract works just as well. You can even replace some of the sugar with vanilla sugar.
• Hot water or brewed hot coffee – This melts the cocoa powder and gives this cake that deep, almost black color when baked. I used instant coffee powder but you can also use espresso powder for a stronger flavor.

Frosted chocolate sheet cake recipe

Cake

• Preheat Oven to 350°F/177°C/ Gas Mark 4
• Prep pan – Grease and dust a 9 x 13 sheet cake pan with softened butter or cooking spray and cocoa powder.

• Coffee – In a large mixing bowl, combine boiling water and coffee. And set aside.
• Dry ingredients – Combine white sugar, brown sugar, flour, cocoa powder, baking powder, baking soda, and salt. Set aside.
• Wet ingredients – In a medium bowl, whip the eggs with buttermilk, cooking oil, and vanilla extract. Then, add the oil followed by the eggs and vanilla. Combine well making sure to break the eggs and incorporate well.
• Wet to dry ingredients – Pour the mixture of liquid ingredients into the dry ingredients (flour mixture) and combine well. Then, add the hot coffee and combine until you have a smooth batter with no lumps.
  Pro tip – Use a whisk to ensure you have no lumps and do not over mix.
• Bake – Pour batter into the prepared pan. Bake on the center rack for about 25 to 30 minutes or until a toothpick inserted into the center comes out clean.
• Cool – Let cool in the pan for 10 minutes. Then, invert onto a wire rack and let cool completely.

Chocolate ganache frosting

• Microwave – Chop the chocolate into smaller similar size pieces and place them in a large bowl or measuring cup. Pour the whipping cream over the chocolate. Next, add the butter and vanilla extract. Combine well. Then, heat in the microwave for a minute or more until all the chocolate is melted and smooth. Use a whisk to ensure it is smooth.
  Double boiler – Alternatively, you can heat the cream in a small saucepan over medium heat until it comes to an almost boil. Then, pour the hot cream over the chopped chocolate. Let stand for 2 minutes. Stir with a spatula until it is smooth.
• Cover the ganache with plastic. Leave to set in the fridge for 2 hours or on the counter for 4 hours until it’s about peanut butter consistency.
  Pro tip – In summer, you may need to place the ganache in the fridge to set it. If it gets hard, place it in the microwave for no more than 10 seconds until you have a spreadable consistency.
• Whip – When cooled to peanut butter consistency whip the ganache until it is light and fluffy.
  Pro tip – Don’t overwhip as it can be difficult to smooth. If you do happen to overwhip, add a few tablespoons of hot milk and whip some more.

Assemble

• Syrup – Prepare simple syrup – Cool completely before using.
  Pro tip – Simple syrup is just sugar water that has been boiled and cooled. Used to keep cake layers moist.
• Level – Using a bread knife or cake leveler, cut the domes off the sheet cake and brush with the cooled simple syrup.
• Frost – Place a sheet cake on the cake board or cake stand. Spread the whipped ganache on top or sides of the cake. Using a paddle motion when spreading will help smooth the ganache better. Place the cake in the fridge to chill for 10 to 15 minutes.
  Pro tip – A straight-edge spatula for the top, an offset spatula, and a bench scraper for the sides work better.
• Border – Place some ganache in the piping bag with a star tip and pipe a border all around the top edge of the cake. I also piped the no 50 on the cake using the star tip.
  Pro tip – you can also pipe a border on the bottom edge of the cake.
• Flowers – I transferred the remaining ganache to a piping bag with Russian piping tips. Hold the bag at a right angle – squeeze and release, until you have piped enough flowers over the cake.
• Decorate – I used dragees to dot the flower centers. I also used gold luster dust paint to paint the edges of some of the flowers. This will help create highlights on the cake.
  Pro tip – 1 tsp of gold luster dust with 1 tsp of vodka or alcohol will create a paint consistency.

Frosted Chocolate Sheet Cake

Author: Veena Azmanov

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Prep Time: 40 minutes mins

Cook Time: 40 minutes mins

Total Time: 3 hours hrs 20 minutes mins

Coooking Temperature: 350°F/177°C/ Gas Mark 4

Calories: 400kcal

Adjust Servings Here: 16 servings

Description

This rich chocolate cake is great for any special occasion. The entire cake is coated with a sweet ganache. It is a moist, fluffy frosted chocolate sheet cake that is perfect for birthdays, celebrations, and more!

Video

Ingredients 

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Cake

• ▢ 2 cups (250 g) All-purpose flour
• ▢ ¾ cup (165 g) Brown sugar
• ▢ ½ cup (100 g) White sugar
• ▢ ½ cup (43 g) Cocoa Powder
• ▢ ¾ tsp Baking powder
• ▢ ¾ tsp Baking soda
• ▢ ½ tsp Salt
• ▢ 3 large Eggs
• ▢ ½ cup (120 ml) Buttermilk
• ▢ ¼ cup (60 ml) Brewed coffee (or hot water)
• ▢ ½ cup (120 ml) Cooking oil
• ▢ 2 tsp Vanilla extract

Chocolate Ganache

• ▢ 1 lb (450 grams) Chocolate (bittersweet, semi-sweet, or dark)
• ▢ 1½ cup (355 ml) Heavy cream
• ▢ 2 tbsp (28 g) Butter
• ▢ 1 tsp Vanilla

Plus

• ▢ ½ cup (120 ml) Simple syrup

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Instructions

Cake

• Preheat Oven to 350°F/177°C/ Gas Mark 4
• Prep pan – 6-cup bundt panGrease and dust a 9 x 13 sheet cake pan with softened butter or cooking spray and cocoa powder.
• Coffee – In a large mixing bowl, combine boiling water and coffee. And set aside.
  ¼ cup Brewed coffee
• Dry ingredients – Combine white sugar, brown sugar, flour, cocoa powder, baking powder, baking soda, and salt. Set aside.
  2 cups All-purpose flour, ¾ cup Brown sugar, ½ cup White sugar, ½ cup Cocoa Powder, ¾ tsp Baking powder, ¾ tsp Baking soda, ½ tsp Salt
• Wet ingredients – In a medium bowl, whip the eggs with buttermilk, cooking oil, and vanilla extract.

  Then, add the oil followed by the eggs and vanilla. Combine well making sure to break the eggs and incorporate well.
  3 large Eggs, ½ cup Buttermilk, ½ cup Cooking oil, 2 tsp Vanilla extract
• Wet to dry ingredients – Pour the mixture of liquid ingredients into the dry ingredients (flour mixture) and combine well. Then, add the hot coffee and combine until you have a smooth batter with no lumps.

  Pro tip – Use a whisk to ensure you have no lumps and do not over mix.
• Bake – Pour batter into the prepared pans. Bake in the center rack for about 25 to 30 minutes or until a toothpick inserted into the center comes out clean.
• Cool – Let cool in the pan for 10 minutes. Then, invert onto a wire rack and let cool completely.

Chocolate ganache

• Microwave – Chop the chocolate into smaller similar size pieces and place it in a large bowl or measuring cup. Pour the whipping cream over the chocolate. Add the butter and vanilla extract. Combine well. Heat in the microwave for a minute or more until all the chocolate is melted and smooth. Use a whisk to ensure it is smooth.

  Double boiler – Alternatively, you can heat the cream in a small saucepan over medium heat until it comes to an almost boil. Then, pour the hot cream over the chopped chocolate. Let stand for 2 minutes. Combine with a spatula until it is smooth.
  1 lb Chocolate, 1½ cup Heavy cream, 2 tbsp Butter, 1 tsp Vanilla
• Chill – Cover the ganache with plastic. Leave to set in the fridge for 2 hours or on the counter for 4 hours until it’s about peanut butter consistency.

  Pro tip – In summer, you may need to place the ganache in the fridge to set. If it gets hard, place it in the microwave for no more than 10 seconds until you have a spreadable consistency.
• Whip – When cooled to peanut butter consistency whip the ganache using a paddle attachment until it is light and fluffy.

  Pro tip – Don't overwhip as it can be difficult to smooth. If you do happen to overwhip, add a few tablespoons of hot milk and whip some more.

Assemble

• Syrup – Prepare simple syrup – Cool completely before using.

  Pro tip – Simple syrup is just sugar water that has been boiled and cooled. Used to keep cake layers moist.
  ½ cup Simple syrup
• Level – Using a bread knife or cake leveler, cut the domes off the sheet cake and brush with the cooled simple syrup.
• Frost – Place a sheet cake on the cake board or cake stand. Spread the whipped ganache on top or sides of the cake. Using a paddle motion when spreading will help smooth the ganache better. Place the cake in the fridge to chill for 10 to 15 minutes.

  Pro tip – A straight-edge spatula for the top, an offset spatula, and a bench scraper for the sides work better.
• Border – Place some ganache in the piping bag with a star tip and pipe a border all around the top edge of the cake. I also piped the no 50 on the cake using the star tip.

  Pro tip – you can also pipe a border on the bottom edge of the cake.
• Flowers – I transferred the remaining ganache to a piping bag with Russian piping tips. Hold the bag at a right angle – squeeze and release, until you have piped enough flowers over the cake.
• Decorate – I used dragees to dot the flower centers. I also used gold luster dust paint to paint the edges of some of the flowers. This will help create highlights on the cake.

  Pro tip – 1 tsp of gold luster dust with 1 tsp of vodka or alcohol will create a paint consistency.

Recipe Notes & Tips

• The cake will stay fresh for up to 3 days at cool room temperature, and longer if kept in the fridge. It can also be frozen for a month.
• Always wrap cakes well especially after cutting them to prevent them from getting dry.
• When keeping it in the refrigerator, place it in sealed silicon or ziplock bag or wrap it in plastic wrap.
• If stored in the freezer – first wrap it in parchment paper, then place it in a freezer-safe bag. Lastly, wrap it in foil to prevent it from catching any freezer smells from other food. Always, thaw in the fridge overnight. The parchment paper keeps the condensation on the paper, not the cake.
• If you do not want to bake this as a chocolate layer cake you can also
  • Make 2 x 7-inch round cake pan. For a taller layer cake use 3 x 6-inch round cakes.
  • You can also make an 8-inch chocolate bundt cake, or
  • This batter would also make 15 to 18 cupcakes

Conversions Used

1 lb = 453 grams, 1 cup = 240 ml, 1 stick = 113g, 1 tbsp= 15 ml, 1 tsp= 5 ml,

Nutrition Information

Calories: 400– kcalCarbohydrates: 32.9– gProtein: 5– gFat: 28– gSaturated Fat: 16.8– gPolyunsaturated Fat: 11– gMonounsaturated Fat: 0– gTrans Fat: 0.2– gCholesterol: 77– mgSodium: 123– mgPotassium: 0– mgFiber: 3.2– gSugar: 20.5– gVitamin A: 0– IUVitamin C: 0– mgCalcium: 0– mgIron: 0– mg

The nutrition information and metric conversion are calculated automatically. I cannot guarantee its accuracy. If this data is important to you please verify with your trusted nutrition calculator. Thank you

Did you make this recipe? Share it with me.Tag @veenaazmanov on instagram or #hashtag it #veenaazmanov

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