For the crust:
1 disk homemade or store-bought pie crust
4 ounces bittersweet chocolate, chopped
Flour, for dusting
For the Filling:
2 1/2 cups whole milk
4 ounces unsweetened chocolate, chopped
1 cup sugar
3 tablespoons cornstarch
2 tablespoons flour
3/4 teaspoon kosher salt
4 large egg yolks, lightly beaten
2 tablespoons unsalted butter
2 teaspoons vanilla extract
For the Whipped Cream
1/2 cup mascarpone cheese
5 tablespoons confectioners’ sugar
1 tablespoon vanilla extract
1 1/2 cups cold heavy cream
Shaved chocolate for decorating
Make the crust: Preheat the oven to 375 F. Roll out the pie dough into a 12-inch round on a lightly floured surface then fit into a 9-inch pie plate. Fold the overhang dough under itself and crimp the edges. Place a piece of parchment paper inside the pie crust and fill with dried beans or pie weights and bake until the crust is starting to set and brown, about 20 minutes. Remove the parchment paper and the beans/weights and bake for another 5 minutes, until the crust is golden and crisp looking. Let it cool completely.
Melt the bittersweet chocolate in heatproof bowl over a saucepan of simmering water. Using a pastry brush, brush the inside of the pie crust with the melted chocolate in a thin layer, place in the refrigerator to harden.
Make the filling: Pour 2 cups of the milk into a heatproof bowl and set over the pan of simmering water. Heat the milk until it’s almost boiling. Add the unsweetened chocolate and stir until melted. Remove from the heat.
In a large bowl whisk the sugar, cornstarch, flour and salt. Whisk in the remaining 1/2 cup milk and then add this mixture to the hot chocolate milk mixture. Raise the heat of the simmering water to medium-high and return the chocolate mixture over the water. Whisk in the egg yolks and cook, whisking constantly until the mixture is very thick. Remove from the heat and stir in the butter and vanilla until smooth. Let the filling cool slightly and then pour into the pie shell. Place a piece of plastic wrap directly on top of the surface of the filling and refrigerate until cold, at least three hours,
Before serving make the mascarpone whipped cream: Beat the mascarpone, sugar and vanilla extract in a large bowl with a mixer until creamy. Add the heavy cream and continue beating until it holds stiff peaks. Add the cream to a pastry bag fitted with a large star and pipe it on top of the pie. Sprinkle with shaved chocolate.
Recipe from Food Network