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Photo by Justin Walker
  • Active Time

    55 minutes

  • Total Time

    1 hour 35 minutes, plus cooling

Our signature—and most sought-after—dessert at Ovenly is our Brooklyn Blackout Cake. It's a black-as-night, chocolatey, bittersweet cake that is a party favorite. 

The Ebinger Baking Company, an iconic baking institution from Brooklyn, is credited with first making the Brooklyn blackout cake, which has had a resurgence in popularity in our neck of the woods. Being Brooklyn-based ourselves, we decided to take a stab at our own version using our Salted Dark Chocolate Pudding. Instead of the traditional devil’s food cake, we make our stout cake with Brooklyn Brewery's Black Chocolate Stout and almost-black, dark Dutch-process cocoa powder, which is richly bittersweet. Once our cake is baked, we add salted fudgy pudding into our base buttercream and then thickly layer it on the cake. This cake, we hope, is as memorable as its bold predecessor. Looking to send a Blackout Cake to a friend? Ovenly ships nationwide.

Can't get enough chocolate? Head this way for morechocolate cake recipes


Makes 1 cake

For the Salted Dark Chocolate Pudding

¼ cup (57g) plus 1¾ cups (398g) whole milk
2½ Tbsp. cornstarch
½ cup (99g) sugar
2 oz. (56g; about ⅓ cup) dark chocolate, chopped
3 Tbsp. dark Dutch-process cocoa powder
1 tsp. vanilla extract
¾ tsp. sea salt

For the Black Chocolate Stout Cake

1½ cups (340g) Brooklyn Brewery Black Chocolate Stout, or other stout of choice
1½ cups (340g) unsalted butter, cut into ½-inch pieces
1½ cups (126g) dark Dutch-process cocoa powder
3 cups (360g) all-purpose flour
2¾ cups (544g) sugar
¾ Tbsp. baking soda
1½ tsp. salt
1 cup (227g) sour cream
3 large eggs, at room temperature

For the Dark Chocolate Pudding Buttercream

16 Tbsp. (1 cup, 8 oz.) cold unsalted butter
7 cups (795g) confectioners’ sugar, plus more for thickening
¾ cup Salted Dark Chocolate Pudding
½ cup (42g) dark Dutch-process cocoa powder
¼ tsp. salt

Make the Salted Dark Chocolate Pudding

Step 1

In a small bowl, whisk together the ¼ cup whole milk and the cornstarch until smooth. Set aside.

Step 2

In a medium saucepan, combine the remaining 1¾ cups milk, sugar, dark chocolate, dark Dutch-process cocoa powder, vanilla extract and sea salt. Heat over medium-low heat, whisking, until the chocolate is melted.

Step 3

Whisk the cornstarch mixture into the chocolate mixture until fully incorporated.

Step 4

Reduce the heat to low, and continue to stir briskly with a wooden spoon or a heatproof spatula. The mixture will come to a simmer and will slowly begin to thicken.

Step 5

Continue to cook for 1 to 2 minutes, or until the pudding coats the back of the spoon and slowly drips off. It will be thick and will just be starting to bubble. Remove the pudding from the heat and pour into 4 serving ramekins or bowls. Let cool.

Step 6

Cover with plastic wrap, refrigerate the pudding until it sets, and serve.

Make the Dark Chocolate Pudding Buttercream

Step 7

Cut the cold butter into ½-inch pieces. Let it come to room temperature.

Step 8

In the bowl of a stand mixer fitted with a paddle attachment, combine the butter, 3 cups of the confectioners’ sugar, ½ cup dark Dutch-process cocoa powder, ¼ teaspoon salt, and ¾ cup Salted Dark Chocolate Pudding, and mix on low until just incorporated. Then beat on medium-high until the mixture is creamy and ingredients are incorporated, about 1 minute. Scrape down the sides of the bowl with a rubber spatula.

Step 9

Add more confectioners’ sugar, 1 cup at a time, and mix on low until the frosting is thick but spreadable. Beat for 1 minute after each addition. You may not need to add all the remaining sugar. Once you have your desired consistency, scrape down the sides of the bowl.

Step 10

Raise the speed to medium-high, and beat for 3 to 4 minutes, or until very light and fluffy. The buttercream should be thick but spreadable. If the buttercream appears too thick, add more cream, 1 tablespoon at a time. If it appears too thin, add more confectioners’ sugar, 1 heaping tablespoon at a time.

Make the Black Chocolate Stout Cake

Step 11

Preheat the oven to 350ºF. Grease two 9-inch cake pans with butter and dust with flour. Line with parchment rounds and grease the rounds.

Step 12

In a large heavy saucepan over medium heat, bring the stout and unsalted butter to a simmer. (You can also melt the butter in your oven or in a large, microwave-safe bowl in a microwave oven and then whisk in the beer.) Remove the stout-butter mixture from the heat, add the Dutch-process cocoa powder and whisk until the mixture is smooth. Let cool for 5 minutes.

Step 13

While the stout-butter mixture cools, in a large bowl, whisk together the flour, sugar, baking soda and salt.

Step 14

In a separate large bowl, whisk together the sour cream and eggs.

Step 15

Add the stout-butter mixture to the egg mixture and whisk to combine. Then add the flour mixture, and combine with a rubber spatula until all the ingredients are incorporated and the batter is smooth, with no lumps. Be sure to scrape the bottom of the bowl to incorporate any dry flour bits.

Step 16

Divide the batter equally between the prepared cake pans. Bake for 35 to 40 minutes, or until a toothpick inserted in the center of each layer comes out clean. Transfer to a rack to cool.

Finish the Brooklyn Blackout Cake

Step 17

Frost the cake with the Dark Chocolate Pudding Buttercream.

Excerpted from Ovenly by Agatha Kulaga and Erin Patinkin © 2021 by Agatha Kulaga and Erin Patinkin, used with permission from Park Row Books/HarperCollins. Buy the full book from HarperCollins or Amazon.

How would you rate Ovenly's Brooklyn Blackout Cake?

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Tell us what you think
  • Original blackout cake has chocolate pudding in the middle, not buttercream frosting

    • Anonymous

    • Born in Brooklyn, grew up in Long Island and now reside in FL

    • 8/9/2022

  • I wanna make this but 7 cups of confectionery sugar for the buttercream seems insane

    • Emma

    • New Orleans

    • 8/8/2022

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