Ingredients

FOR THE BATTER:
1/2 cup unsalted butter
1 1/2 cups granulated sugar
4 tablespoons unsweetened cocoa powder
2 cups all-purpose flour
2 teaspoons baking powder
1/4 teaspoon salt
1 cup milk
2 teaspoons vanilla extract
FOR THE TOPPING:
2 cups granulated sugar
1/2 cup unsweetened cocoa powder
3 cups boiling water