Ingredients
Yield: 12 muffins
¾ stick (6 tablespoons) unsalted butter
4 ounces bittersweet chocolate, coarsely chopped, divided
2 cups all-purpose flour
2/3 cup granulated sugar
1/3 cup unsweetened cocoa powder, sifted
1 tablespoon baking powder
½ teaspoon baking soda
½ teaspoon salt
1¼ cups buttermilk
1 large egg
1 teaspoon pure vanilla extract
Preparation
