Chocolate white chocolate cupcakes - Recipe Tweets

Ingredients

• 1/2 cup unsalted butter
• 2 ounces semi-sweet baking chocolate, chopped
• 1/2 cup unsweetened cocoa powder
• 3/4 cup all-purpose flour
• 1/2 teaspoon baking soda
• 3/4 teaspoon baking powder
• 1/4 teaspoon salt
• 2 large eggs, at room temperature
• 1/2 cup granulated sugar
• 1/4 cup packed light or dark brown sugar
• 1 teaspoon pure vanilla extract
• 1/2 cup buttermilk
• 6 ounces white chocolate, chopped
• 1 cup unsalted butter, softened
• 2 cups confectioners' sugar
• 1/4 cup heavy cream or milk
• 2 ounces optional garnish: melted chocolate