Triple Layer Chocolate Cake with Chocolate Buttercream Icing

This week my parents came to visit, so I pulled out all the stops! But this wasn’t just to create a more memorable visit, it was mostly to celebrate our little girl’s fifth birthday. We forgot to pick up candles and I meant to put rainbow sprinkles on this, but she assured me that it was “okay”. Thankfully the lack of these items didn’t take away from the flavor and richness of this cake.

This was my first ever homemade icing and it was so easy, thanks to my trusty KitchenAid standing mixer. It is a messy process sifting all those six cups of powdered sugar, but it was worth it. Next time I will be more generous with the frosting between the layers, but I was worried I wouldn’t have enough to frost the “outside”. Once the cake was frosted, I put it in the fridge to set up. Oh, and don’t mind the wax paper – that was meant to keep the cake plate cleaner but I forgot to remove them before the rest in the fridge. Overall, this cake was really worth the effort and not at all difficult. Thanks for reading, enjoy!

Double Layer Chocolate Cake – adapted from Smitten Kitchen

** This became a “triple layer” cake because I only have 9″ cake pans**

The recipe below is for 2 10-inch layers filled and coated in chocolate ganache. My adaptations were to split the layers to create a four-layer cake and use raspberry filling instead of chocolate. To do the same, use half the frosting and all of the raspberry filling, recipe at the end.

For cake layers

  • 3 ounces fine-quality semisweet chocolate such as Callebaut
  • 1 1/2 cups hot brewed coffee
  • 3 cups sugar
  • 2 1/2 cups all-purpose flour
  • 1 1/2 cups unsweetened cocoa powder (not Dutch process)
  • 2 teaspoons baking soda
  • 3/4 teaspoon baking powder
  • 1 1/4 teaspoons salt
  • 3 large eggs
  • 3/4 cup vegetable oil
  • 1 1/2 cups well-shaken buttermilk
  • 3/4 teaspoon vanilla

Make cake layers: Preheat oven to 300°F. and grease pans. Line bottoms with rounds of parchment paper and grease paper.

Finely chop chocolate and in a bowl combine with hot coffee. Let mixture stand, stirring occasionally, until chocolate is melted and mixture is smooth.

Into a large bowl sift together sugar, flour, cocoa powder, baking soda, baking powder, and salt. In another large bowl with an electric mixer beat eggs until thickened slightly and lemon colored (about 3 minutes with a standing mixer or 5 minutes with a hand-held mixer). Slowly add oil, buttermilk, vanilla, and melted chocolate mixture to eggs, beating until combined well. Add sugar mixture and beat on medium speed until just combined well.

Divide batter between pans and bake in middle of oven until a tester inserted in center comes out clean, 1 hour to 1 hour and 10 minutes.

Cool layers completely in pans on racks. Run a thin knife around edges of pans and invert layers onto racks. Carefully remove wax paper and cool layers completely. Cake layers may be made 1 day ahead and kept, wrapped well in plastic wrap, at room temperature

Quick Chocolate Buttercream – adapted from Williams-Sonoma

  • 8 oz. unsweetened chocolate, chopped
  • 6 cups confectioners’ sugar
  • 16 Tbs. (2 sticks) unsalted butter
  • 6 Tbs. milk, plus more, if needed
  • 2 tsp. vanilla extract
  • 1/4 tsp. salt

Directions –

Have all the ingredients at room temperature.

Put the chocolate in the top pan of a double boiler set over but not touching simmering water in the bottom pan. Stir until the chocolate is melted and smooth. Let cool to room temperature.

In the bowl of an electric mixer fitted with the flat beater, combine the confectioners’ sugar, butter, the 6 Tbs. milk, the vanilla and salt and beat on low speed until combined, about 1 minute. Stop the mixer and scrape down the sides of the bowl. Increase the speed to medium and beat for 2 minutes, then reduce the speed to low. Add the chocolate and beat until combined, then increase the speed to medium and beat for 1 minute more.

If the frosting is dry, add more milk, 1 tsp. at a time, until it is creamy but still holds peaks. Makes about 4 1/2 cups.

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6 thoughts on “Triple Layer Chocolate Cake with Chocolate Buttercream Icing

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