"Moist and rich, the true secret ingredient here is the soy sauce in the frosting. FOR REAL. It adds just a little salty note that really pulls the cake together...."
INGREDIENTS
•
1 cup (2 sticks) plus 1 tablespoon unsalted butter, at room temperature
•
2 1/3 cups all-purpose flour
•
1/2 cup Dutch-process cocoa powder
•
1 1/2 teaspoons baking powder
•
1/2 teaspoon baking soda
•
1/2 teaspoon fine sea salt
•
1 3/4 cups buttermilk
•
2 teaspoons pure vanilla extract
•
2 1/4 cups light brown sugar
•
3 large eggs
•
8 ounces semisweet or bittersweet chocolate, finely chopped, and melted (see Note)
•
10 tablespoons (1 1/4 sticks) unsalted butter, at room temperature
•
1 cup confectioners’ sugar
•
4 ounces bittersweet chocolate, finely chopped, melted, and cooled to room temperature (see Note)
•
2 tablespoons soy sauce
•
1 teaspoon pure vanilla extract