- 1 cup unsalted butter (2 sticks), cut into pieces, plus more for the pans
- 2 cups all-purpose flour, spooned and leveled
- 1 1/2 cups granulated sugar
- 3/4 cup unsweetened cocoa powder
- 1/2 cup dark brown sugar
- 1 teaspoon baking soda
- 1 teaspoon kosher salt
- 2 large eggs
- 1/2 cup sour cream
- 1 teaspoon pure vanilla extract
Heat oven to 350º F. Butter two 8- or 9-inch round cake pans and line the bottom of each with a round of parchment paper.
In a large bowl, whisk together the flour, granulated sugar, cocoa powder, brown sugar, baking soda, and salt.
In a small saucepan, combine the butter and 1 cup water and bring to a boil. Add to the flour mixture and, using an electric mixer, mix until combined. Beat in the eggs, one at a time, then the sour cream and vanilla.
Divide the batter evenly between the prepared pans. Bake until a toothpick inserted in the center of each cake comes out clean, 35 to 45 minutes. Cool in the pans for 20 minutes, then turn out onto a rack to cool completely.
Transfer one of the cakes to a platter and spread with ¾ cup icing. Top with the remaining cake and spread with the remaining icing.
Put candles in the cake. Light them. Sing the Happy Birthday song. Cut into neat pieces. Top with coffee ice cream. Eat. Enjoy. Laugh. Have a second helping, you deserve it.
You can see the original recipe here.