Ingredients
- Filling and Swirl:
- 2 cups all-purpose flour
- 1 cup unsweetened cocoa powder
- 1- 1/2 teaspoons baking soda
- 1/2 teaspoon salt
- 1- 1/2 cups buttermilk
- 1 teaspoon vanilla extract
- 1/2 cup (1 stick) unsalted butter, softened
- 1- 1/2 cups sugar
- 3 large eggs
- 4 tablespoons unsalted butter, softened
- 1- 1/2 cups confectioners' sugar
- 2 to 3 tablespoons milk
- Glaze:
- 1/2 cup heavy cream
- 1 tablespoon light corn syrup
- 1 cup semisweet chocolate chips
Preparation
Step 1
1
Heat oven to 350 degrees. Line 24 muffin cups with paper liners.
2
Combine the flour, cocoa, baking soda and salt in a medium bowl. Whisk to blend. Combine the buttermilk and the vanilla in a measuring cup.
3
Beat the butter and the sugar in a medium mixing bowl with an electric mixer on medium high speed until light and fluffy. Add the eggs one at a time, beating well after each addition. Add the flour mixture alternating with the buttermilk mixture, starting and ending with the flour mixture.
4
Divide the batter between the prepared muffin pans. Bake until a toothpick inserted in centers comes out clean, 18 to 20 minutes. Transfer to a wire rack and cool 10 minutes. Invert and cool completely.
5
Filling and Swirl: Beat butter in a medium-size bowl until light and fluffy. Gradually add confectioners' sugar. Add 2 tablespoons of the milk and beat 5 minutes until almost white and light and fluffy. Add additional milk if mixture is too thick. Spoon frosting into a pastry bag fitted with a medium-size plain round tip. Remove cakes from pan. Insert tip of pastry bag into top of cakes, about 1/2 inch deep, and squeeze.
6
Meanwhile, make the Glaze: Heat the cream and corn syrup in a small saucepan over medium heat until it just comes to a boil. Remove from heat and stir in the chocolate chips. Cover and let stand 5 minutes. Whisk until smooth.
7
Dip the tops of the filled cupcakes into the chocolate glaze. Place on a cooling rack to set for 10 minutes.
8
Change the piping tip for the vanilla frosting to a smaller round tip. Pipe decorative swirls on top of the glazed cupcakes.