Brooklyn Blackout Cake Recipe

Ingredients

• PUDDING:
• 1/2 cup sugar
• 2 tablespoons cornstarch
• 1/4 teaspoon salt
• 1-1/2 cups whole milk
• 3 ounces semisweet chocolate, chopped
• 1 teaspoon vanilla extract
• CAKE:
• 1-1/2 cups all-purpose flour
• 2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 cup unsalted butter, cubed
• 3/4 cup Dutch-processed cocoa
• 1 cup sugar
• 1 cup packed brown sugar
• 1 cup buttermilk
• 1 cup strong brewed coffee
• 2 large eggs
• FROSTING:
• 8 ounces semisweet chocolate, chopped
• 1/3 cup hot water
• 2 teaspoons light corn syrup
• 2 teaspoons vanilla extract