Chocolate Birthday Layer Cake

这容易,潮湿的巧克力夹心蛋糕gets deep flavor from cocoa powder and espresso powder and moisture from vegetable oil.

Overhead view of Birthday Cake

Serious Eats / Robby Lozano

Why It Works

  • Using vegetable oil in the batter makes the cake extremely moist.
  • Using both cocoa and espresso powder gives the cake a deep, chocolaty flavor. Sour cream adds a welcome lactic tang.
  • The frosting comes together quickly and without the need for chilling prior to assembling the cake.
  • Adding corn syrup to the frosting ensures a smooth result with no grittiness.

When the anticipation of decent presents and being another year older have long since evaporated like the memories of that first kiss in the back of the movie theater, I say thank god at least for birthday cake.

This cake is the perfect party cake. Dark, dewy, cocoa-espresso cake layers nest in heavy swathes of bittersweet chocolate frosting. Sitting tall and pretty, decked out in creamy swirls of chocolate, this cakedaresyou to resist. But you won't, and as you dig your fork into a slice, the velvety cake gently yields under the satiny icing.

But this cake is by no means fancy or elaborate. It's a basic cake that smacks of a simple, moist Betty Crocker cake—except this one's real. And I'm sure I don't have to tell you that this cake isn't just for birthdays. Every cook should have an easy-to-make, star chocolate cake to pull out of their recipe box at a moment's notice, and today I'm offering up my all-time favorite.

And did I sayeasy?b你et I did. This recipe is a lickety-split "dump and stir" method. Simply whisk the wet ingredients into the dry, and in the oven it goes.

Cocoa, espresso, and tangy sour cream flavor the cake. I also swear by vegetable oil in all my chocolate cakes—nothing makes a chocolate cake more moist. For the frosting, the best tasting, quickest frosting, hands down, is based onthe very first recipe that I developed forCook's Illustrated. Unlike chocolate ganache (which you have to chill until it sets), you can frost your cake as soon as you make it. And unlike most quick frostings (which are gritty from confectioners' sugar), swapping some of the sugar for corn syrup keeps it creamy. My chocolate cravings have gotten bigger lately, so this time around I tweaked the original by making it less sweet and more chocolaty. (For the best results use ahigh-quality bittersweet chocolate.)

To assemble, just spread a dollop of frosting in between the two cakes and sandwich them together. If you own a cake wheel and a spatula, you canspin this cake to professional perfection.Otherwise, just do what grandma always did—use the back of a soup spoon to whirl the shiny icing into soft swirly tufts. Sprinkle on the technicolor sprinkles or sugar confetti, load it up with candles, and celebrate another year to eat cake.

February 2012

This recipe was cross-tested in 2023 and updated with more accurate measurements to guarantee best results.

Recipe Details

Chocolate Birthday Layer Cake

Prep10 mins
Cook22 mins
Active45 mins
Cooling Time75 mins
Total107 mins
服务12 to 14 servings

这容易,潮湿的巧克力夹心蛋糕gets deep flavor from cocoa powder and espresso powder and moisture from vegetable oil.

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For the Cake:

  • 1 1/2cupsall-purpose flour(7 ounces; 195g)

  • 1/2cupcocoa powder(1 1/2 ounces; 42g), see notes

  • 1teaspoonbaking soda

  • 1/4teaspoonDiamond Crystal koshersalt; for table salt, use half as much by volume

  • 1 1/4cupsgranulated sugar(8 3/4 ounces; 250g)

  • 1 1/4cupssour cream(10 ounces; 287g)

  • 2/3cup(160ml)vegetable oil

  • 2largeeggs

  • 1teaspoonvanilla extract

  • 1teaspooninstant espresso powder

For the Frosting:

  • 20tablespoonsunsalted butter, softened (10 ounces; 280g), see notes

  • 1cupconfectioners' sugar(4 1/4 ounces;120g)

  • 3/4cupplus1tablespooncocoa powder(2 1/2 ounces;74g)

  • koshersalt; for table salt, use half as much by volume

  • 2/3cup(160ml)light corn syrup

  • 1teaspoonvanilla extract

  • 10盎司(280g)bittersweet chocolate, melted and cooled

Directions

  1. For the Cake:Adjust oven rack to middle position and preheat oven to 350°F (175°C). Line bottoms of two 9-inch cake pans with parchment paper and lightly coat the inside with nonstick cooking spray.

    Two pans layered with parchment paper

    Serious Eats / Robby Lozano

  2. In a large bowl, sift flour, cocoa, baking soda, and salt, and whisk to combine; set aside. In a medium bowl, whisk sugar, sour cream, oil, eggs, vanilla, and espresso powder until smooth.

    Two image collage of mixing ingredients

    Serious Eats / Robby Lozano

  3. Whisk wet ingredients into dry ingredients until smooth. Divide batter evenly between prepared pans and smooth cake tops with rubber spatula. Bake until cake is just firm and a toothpick inserted into center comes out with just a few moist crumbs attached, 22 to 25 minutes.

    Two image collage of mixing ingredients and spreading into two cake pans

    Serious Eats / Robby Lozano

  4. Let cakes cool in pans for 15 minutes. Remove cakes from pans, discard parchment, and let cool completely on wire rack, about 1 hour.

    Overhead view of cakes resting on a wire rack

    Serious Eats / Robby Lozano

  5. For the Frosting:与此同时,在食品加工机,过程butter, confectioners' sugar, cocoa, and salt until combined and smooth, about 30 seconds, scraping down sides of bowl as necessary. Add corn syrup and vanilla and process until smooth, about 30 seconds, scraping down sides of bowl as necessary. Add chocolate and process until smooth and creamy, about 30 seconds. (See notes.)

    Overhead view of mixing icing

    Serious Eats / Robby Lozano

  6. To Assemble the Cake:Place one cake, top side up, on a serving platter or cake pedestal. Using offset spatula, spread about 1 cup frosting over top of cake layer. Center second cake, bottom side up, on top, and press lightly to adhere. Spread remaining frosting evenly over top and sides of assembled cake. To decorate, use the back of a soup spoon to make decorative swirls on the cake or decorate as desired. Serve.

    Four image collage of icing the cake

    Serious Eats / Robby Lozano

Special Equipment

Two 9-inchcake pans, parchment paper,food processor

Notes

Be sure to use natural cocoa; do not use Dutch-processed cocoa powder as it may affect the leavening of the cake.

8-inch cake pans can be substituted for 9-inch cake pans. If using 8-inch cake pans, increase baking time to 25 to 30 minutes in Step 3. In Step 6, frost top of bottom cake layer with 3/4 cup frosting.

Do not over-soften butter or the frosting will be too loose. The butter should yield lightly to the touch (about 60ºF or 16ºC).

If the chocolate is too warm, the frosting may be too loose. If the finished frosting is too soft, briefly refrigerate until it firms up to a spreadable consistency.

Make-Ahead和存储

The baked, cooled cakes can be wrapped in plastic wrap and frozen for up to 1 month. Thaw at room temperature before frosting and stacking.

The frosting comes together quickly, so we recommend making it right before assembling the cake.

The assembled cake can be covered and stored at room temperature for up to 2 days or refrigerated for up to 4 days. Bring to room temperature before serving.

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Nutrition Facts(per serving)
646 卡路里
43g Fat
60g Carbs
7g Protein
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Nutrition Facts
Servings: 12 to 14
Amount per serving
卡路里 646
% Daily Value*
Total Fat43g 55%
Saturated Fat 20g 99%
Cholesterol83mg 28%
Sodium172mg 7%
Total Carbohydrate60g 22%
Dietary Fiber 5g 19%
Total Sugars 39g
Protein7g
Vitamin C 0mg 1%
Calcium 55mg 4%
Iron 7mg 39%
Potassium 225mg 5%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)