Ingredients

  • 1 9 -ounce package chocolate wafer cookies
  • 1/4 cup granulated sugar
  • 1 stick unsalted butter, melted
  • Cooking spray
  • 2 cups whole milk
  • 4 large egg yolks
  • 1/2 cup granulated sugar
  • 3 tablespoons cornstarch
  • 1/4 teaspoon salt
  • 6 ounces semisweet chocolate, finely chopped
  • 2 ounces mint-flavored chocolate (such as Andes), finely chopped
  • 2 tablespoons unsalted butter, cut into small pieces
  • 2 cups cold heavy cream
  • 2 tablespoons confectioners' sugar
  • 1/2 teaspoon peppermint extract
  • Red sanding sugar, for sprinkling (optional)

Method

  • Make the crust: Position a rack in the lower third of the oven and preheat to 375 degrees F. Pulse the cookies and granulated sugar in a food processor until finely ground.
  • Add the melted butter and pulse until combined.
  • Lightly coat a 9-inch tart pan with a removable bottom with cooking spray.
  • Press the crumb mixture into the bottom and up the side of the pan.
  • Bake until set, about 15 minutes, then transfer to a rack to cool completely.
  • Meanwhile, make the filling: Heat the milk in a saucepan over medium-high heat until it starts simmering, then remove from the heat.
  • Whisk the egg yolks, granulated sugar, cornstarch and salt in a medium bowl until combined.
  • Gradually whisk one-third of the warm milk into the egg mixture, then pour into the saucepan with the remaining milk.
  • Cook over medium heat, whisking constantly, until the mixture starts to bubble and thicken, about 3 minutes.
  • Continue boiling, whisking, until the mixture is thick like pudding, about 2 more minutes.
  • Remove from the heat, then whisk in the semisweet and mint-flavored chocolate and the butter.
  • Pour into the prepared crust and spread evenly.
  • Refrigerate until set, about 1 1/2 hours.
  • Right before serving, beat the heavy cream, confectioners' sugar and peppermint extract in a medium bowl with a mixer on medium speed until soft peaks form.
  • Spread the whipped cream on the tart and sprinkle with sanding sugar.
  • Photographs by Johnny Miller