I’m going to ask you to drop what you’re doing and make this cake.
Unless you’re my nine year old son, in which case you took one look at this photo and asked me if I put ribs on top of a chocolate cake.
Then he tells you that he’s putting your face on top of a cake, and this is why my house is weird. Love = insults. On Valentine’s Day, it’s basically a never ending stream of Yo Mama jokes. I feel so loved.
Back to this cake — I happened across an article online that was highlighting regional desserts. Bumpy Cake was named a favorite in Detroit. Of course, I had to do some investigating.
Bumpy cake, as it turns out, is chocolate cake striped with buttercream “bumps” and then covered in fudge.
As you could imagine, I was all over it. And I am NOT kidding when I say it’s one of the best cakes I’ve ever tasted.
I used my own chocolate cake and buttercream recipe and slightly adapted the poured fudge frosting I found HERE. And then I ate about forty-three spoonfuls of said fudge frosting out of the mixing bowl.
Don’t you hate when you accidentally on purpose have a lot of frosting left in the bowl and don’t want to waste it?
My frosting was a bit dripper that the frosting in the photos I saw online, but I don’t even care. It was AMAZING. The chocolate cake is moist and rich, and this is a dessert I’ll be making for a VERY long time. Definitely a crowd pleaser!!
If you try it, I’d love to hear your thoughts too.
- 1 cup water
- 1/2 cup vegetable oil
- 1/2 cup (1 stick) salted butter
- 3 heaping Tablespoons dark (dutch process) cocoa powder
- 2 cups granulated sugar
- 2 cups all purpose flour
- 3 large eggs
- 1/2 cup buttermilk
- 1 teaspoon baking soda
- 1 teaspoon vanilla extract
- 1 stick salted butter, slightly softened
- 1/2 tsp vanilla extract
- 3 TBS whole milk
- 2 cups powdered sugar
- Poured Fudge:
- 1/2 cup buttermilk, room temperature
- 2 1/2 cups powdered sugar
- 1 teaspoon vanilla extract
- 1 cup sugar
- 1/3 cup unsweetened dark (Dutch process) cocoa powder
- 1/3 cup dark corn syrup
- 1/4 teaspoon salt
- 16 TBS (2 sticks) unsalted butter, cut into tablespoon-sized pieces
- Preheat oven to 350. Butter and flour a 9x13 pan and set aside.
- In the large bowl of a mixer, stir together sugar and flour and set aside.
- In a saucepan, bring water, oil, butter and cocoa to a boil. Pour into the flour mixture and beat on medium low for about a minute. Add eggs, buttermilk, baking soda and vanilla and beat on medium for a minute more. Spread batter into prepared pan and bake for about 30 minutes or until a toothpick inserted in the center comes out clean. Let cake cool completely on a wire rack. Place cooled cake covered in the freezer for a minimum of an hour OR up to overnight if necessary.
- Prepare buttercream: In the bowl of your mixer, beat butter, milk, and vanilla on medium low speed. With the mixer on low, slowly add powdered sugar, beating on low until just mixed. Increase speed to high and beat for one minute until smooth. Using a large round piping tip, pipe frosting in lines across the surface of the cake, an inch or so apart. Place cake back in the freezer for 30 minutes to an hour.
- Prepare poured fudge frosting: In a large bowl whisk together buttermilk, confectioner's sugar and vanilla. Set aside. In a saucepan, combine sugar, cocoa, corn syrup, salt and 8 TBS of butter. Stir to incorporate butter as it's melting then bring mixture to a boil over medium high heat. Cook until mixture registers 240°F on a candy thermometer, then remove from heat. While whisking constantly, add hot mixture to buttermilk mixture. Add remaining 8 TBS of butter and continue whisking until fully incorporated and mixture has cooled to lukewarm.
- Remove cake from freezer and pour fudge frosting so that it covers the buttercream rolls. Use a spatula to quickly cover surface of cake and buttercream so a thin sheet of fudge coats the bumps. Place cake back in the freezer for at least 30 minutes before cutting and serving.
Poured fudge adapted from Serious Eats
This cake is definitely going to the top of your favorites list, too!!
Have a great day!!