Bumpy Cake

Bumpy Cake was pinched from <a href="https://www.kingarthurflour.com/recipes/bumpy-cake-recipe" target="_blank" rel="noopener">www.kingarthurflour.com.</a>

"Originally created in the early 1900s by the Sanders Chocolates company in Detroit (where the ice cream float was also invented), this cake sports a poured fudge frosting over “bumps” of vanilla buttercream, creating the name by which Midwesterners have known and loved it for many years: Bumpy Cake...."

INGREDIENTS
1/2 cup Dutch-process cocoa
1/2 cup hot brewed coffee or water
1/2 cup vegetable oil
1 cup buttermilk
1 1/2 teaspoons baking soda
1/2 teaspoon salt
2 teaspoons vanilla extract
2 large eggs
1 3/4 cups granulated sugar
2 cups King Arthur Unbleached All-Purpose Flour
6 tablespoons unsalted butter, at room temperature
1/8 teaspoon salt
2 cups confectioners' sugar, sifted
1 teaspoon vanilla extract
1 to 2 tablespoons milk or half & half, as needed
1/2 cup buttermilk
2 tablespoons dark corn syrup
8 tablespoons (1/2 cup) unsalted butter
1/2 cup Dutch-process cocoa
1/4 teaspoon salt
4 cups confectioners' sugar, sifted
1 teaspoon vanilla extract
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