"For variations on this cake, see our vanilla and lemon cake recipes...."
INGREDIENTS
•
1 cup (2 sticks) unsalted butter, plus more for pans
•
2 cups all-purpose flour (spooned and leveled), plus more for pans
•
1/2 cup unsweetened cocoa powder
•
1/2 teaspoon baking powder
•
1/2 teaspoon baking soda
•
1 teaspoon salt
•
1 1/2 cups sugar
•
2 large eggs plus 3 large egg yolks
•
2 teaspoons pure vanilla extract
•
1 cup low-fat buttermilk
•
Whipped Frosting
•
Shaved dark chocolate