Recipe courtesy of Lila Smethurst

Chocolate-Nutella Cupcakes with Salted Caramel Buttercream

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  • Level: Intermediate
  • Total: 1 hr 45 min (plus cooling)
  • Active: 1 hr
  • Yield: about 16 servings
Lila Smethurst, 13, learned how to bake from her mother and grandmother, but she became a real pro by watching Kids Baking Championship. “I’ve seen each season multiple times,” she says. Landing a spot on the show was a dream come true, and the San Antonio teen was especially excited to meet judge Duff Goldman: “I’m a superfan!” she says. For the science fair–themed final challenge, Lila wowed Duff with her volcano-shaped chocolate cake with Nutella pastry cream and salted caramel buttercream. She took home the $25,000 grand prize, then promptly got two cats and named one of them Duff in honor of her baking idol. Turn the page to try Lila’s winning dessert—as a cupcake!

Ingredients

For the Filling:

For the Cupcakes:

For the Frosting:

Directions

  1. Make the filling: Whisk together 2 tablespoons milk and the cornstarch in a medium bowl until smooth. Add the egg yolks and whisk until blended; set aside.
  2. Combine the remaining 3/4 cup plus 2 tablespoons milk with the granulated sugar in a medium saucepan and bring to a boil over medium-high heat, whisking occasionally. Pour about three-quarters of the hot milk mixture into the egg mixture in a slow steady stream, whisking constantly. Whisk the egg mixture back into the saucepan over medium heat; bring to a boil, whisking constantly, and cook 1 minute. Remove from the heat and whisk in the Nutella, butter, vanilla and salt until smooth. Pour into a bowl and press a sheet of plastic wrap directly onto the surface to prevent a skin from forming. Refrigerate until cooled, about 1 hour.
  3. Meanwhile, make the cupcakes: Preheat the oven to 350 degrees F. Line 16 muffin cups with paper liners. Combine the chocolate, cocoa powder and espresso powder in a medium heatproof bowl. Pour in the boiling water, then cover and let stand 5 minutes. Whisk until smooth, then set aside to cool.
  4. Whisk together the flour, granulated sugar, brown sugar, salt and baking soda in a small bowl; set aside. Whisk the sour cream, vegetable oil, whole eggs and egg yolk, the vinegar and vanilla into the cooled chocolate mixture. Add the flour mixture and stir until smooth; do not overmix.
  5. Divide the batter among the muffin cups, filling them about three-quarters full. Bake until a toothpick inserted into the middle comes out clean, 17 to 18 minutes. Let cool 5 minutes in the pans, then transfer to a rack to cool completely.
  6. Make the frosting: Beat together the butter and shortening in a large bowl with a mixer on medium-high speed until combined. Add 2 cups confectioners’ sugar and 1 tablespoon heavy cream and beat on medium speed until combined. Beat in 2 more cups confectioners’ sugar and 1 more tablespoon heavy cream, then beat in 1 more cup confectioners’ sugar until smooth and fluffy. Beat in the caramel, then increase the speed to medium-high and beat until light and fluffy; beat in the salt. Beat in more heavy cream or confectioners’ sugar as needed, a little at a time, to reach the right consistency.
  7. Assemble the cupcakes: Transfer the Nutella filling to a piping bag fitted with a large open tip. Make a 1-inch incision in the top of each cupcake, then pipe about a tablespoon of filling into each. Transfer the frosting to a separate piping bag fitted with another large open tip. Pipe onto the cupcakes, then drizzle with caramel sauce.