CHOCOLATE SHEET CAKE WITH VANILLA BUTTERCREAM

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Chocolate Sheet Cake with Vanilla Buttercream image

Cocoa powder and melted chocolate give this classic Chocolate Sheet Cake with Vanilla Buttercream deep, well-rounded flavor. Inspired by devil's food cake, it's a party-perfect dessert that's rich but not overly sweet.

Provided by Martha Stewart

Categories     Food & Cooking     Dessert & Treats Recipes     Cake Recipes     Fillings & Frostings     Buttercream Frosting Recipes

Time 1h10m

Yield Serves 12 to 16

Number Of Ingredients 14

1 1/2 sticks unsalted butter, room temperature, plus more for pan
1/2 cup boiling water
1/3 cup natural cocoa powder
3 ounces semisweet chocolate, finely chopped (1/2 cup)
2 cups unbleached all-purpose flour
1 teaspoon baking powder
1/2 teaspoon baking soda
1 teaspoon kosher salt
1 1/2 cups sugar
2 large eggs, room temperature
2 teaspoons pure vanilla extract
1 cup sour cream
1/2 recipe Vanilla Swiss-Meringue Buttercream
Chocolate curls, for serving (optional; see note, above)

Steps:

  • Preheat oven to 350 degrees. Butter a 9-by-13-inch baking pan. Line bottom with parchment; butter parchment. Stir together boiling water, cocoa, and chocolate; let cool 10 minutes. Meanwhile, whisk together flour, baking powder, baking soda, and salt in another bowl.
  • Beat butter with sugar on medium-high speed until fluffy, 2 to 3 minutes. Beat in eggs, one at a time, beating to combine after each addition and scraping down sides of bowl as needed. Beat in vanilla, then chocolate mixture. Reduce speed to low; beat in flour mixture in two batches, alternating with sour cream, until just combined. Scrape batter into prepared pan, smoothing top with an offset spatula.
  • Bake until a tester inserted in center comes out with a few moist crumbs, 35 to 40 minutes (top will not spring back). Let cool in pan 10 minutes. Invert onto a wire rack and remove parchment; let cool completely. Cake can be made up to 1 day ahead and stored at room temperature, wrapped in plastic.
  • Spread buttercream evenly over top and sides of cake. Sprinkle with chocolate curls. (Leftovers can be refrigerated, wrapped in plastic, up to 3 days; return to room temperature before serving.)

Boy dance Boy
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This cake is not worth the effort. It's not as good as it looks.


Zahanat Hussain
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I'm not sure if I did something wrong, but my cake turned out a bit dense. The frosting was also a bit too thick.


Junaid Ahmed
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This cake is just okay. It's not as good as I expected.


Wahab Khan 789
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The frosting is a bit too runny. I think I'll try a different recipe next time.


Juyel Rana
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This cake is a bit dry. I think I'll add some extra butter or oil next time.


Alejandra Mimendi
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I followed the recipe exactly, but my cake didn't rise properly. I'm not sure what went wrong.


Kira Wexx
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This cake is way too sweet for me. I think I'll try a different recipe next time.


Charla VanAuken
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I'm not sure what I did wrong, but my cake didn't turn out as moist as I expected. The frosting was also a bit too sweet for my taste.


Jexy Schilling
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This cake is a bit time-consuming to make, but it's worth the effort. It's so delicious and decadent, it's perfect for a special occasion.


Daisy Boyd
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I've never been a fan of chocolate cake, but this one is an exception. It's so moist and flavorful, I can't get enough of it.


Prabina Kharel
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This cake is perfect for any occasion. It's easy to make and it's always a crowd-pleaser.


MD AIO
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I made this cake for my husband's birthday and he loved it! He said it was the best chocolate cake he's ever had.


michael springer
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This cake is a chocoholic's dream. It's so rich and decadent, I could eat it every day.


Tony Hughes
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I love the simplicity of this recipe. It's just a few basic ingredients, but the results are amazing. The cake is so moist and chocolatey, and the frosting is light and fluffy.


Shelby Allen
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I was a bit skeptical about making a chocolate sheet cake from scratch, but this recipe made it so easy. The cake turned out perfectly and the frosting was delicious.


Md Halel
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This is the best chocolate sheet cake I've ever had. The cake is moist and fluffy, and the frosting is smooth and creamy. I will definitely be making this again!


Warren Nuthall
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I'm not a big fan of chocolate cake, but this one changed my mind. It's so rich and flavorful, and the vanilla buttercream is the perfect complement.


Mucaad Cilmi
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This cake is so moist and decadent, it's hard to believe it's also gluten-free. I love that it's made with almond flour and coconut flour, which gives it a unique and delicious flavor.


Nicole Marune
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I've made this cake several times now and it's always a hit with my friends and family. It's so easy to make and the results are always amazing!


DJ Abui
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This chocolate sheet cake with vanilla buttercream is an absolute delight. It has the perfect balance of sweetness and richness, and the texture is incredibly moist and fluffy. I highly recommend it!