Classic Diner Style Chocolate Pie

This recipe is by Martha Stewart.

INGREDIENTS:

• • 30 chocolate wafer cookies (about 6 ounces)
  • 1 tablespoon sugar
  • 6 tablespoons unsalted butter, melted
  • 1/2 cup sugar
  • 3 tablespoons chocolate malt Ovaltine
  • 1 teaspoon salt
  • 1/4 cup cornstarch
  • 5 large egg yolks
  • 2 cups whole milk
  • 1/2 cup heavy cream
  • 5 ounces dark chocolate (60 to 70 percent cacao), coarsely chopped
  • 2 ounces milk chocolate, coarsley chopped
  • 2 teaspoons whiskey
  • 1 teaspoon pure vanilla extract
  • Vanilla Bean Whipped Cream

LET'S MAKE THE PIE:

1. Make the crust: Place cookies in the bowl of a food processor and process until a fine powder is formed. You should have about 1 1/2 cups. Transfer crumbs to a medium bowl and stir in sugar. Add melted butter and mix until well combined; mixture should feel wet.
2. Turn crust mixture out into a 9-inch round pie plate. Using the back of a large spoon, press the mixture evenly into the bottom and up the sides. Transfer crust to freezer.
3. Make the filling: In a medium saucepan, whisk together sugar, Ovaltine, salt, and cornstarch. Add egg yolks and whisk until combined; mixture will look like a thick paste. Slowly pour in milk and cream, whisking constantly. Bring to a boil over medium heat, whisking constantly; let boil for 30 seconds and immediately remove from heat.
4. Add chocolates, whiskey, and vanilla; whisk until well combined and mixture has cooled slightly. Let stand, at room temperature, for 15 minutes. If a thin skin forms on the filling while cooling, whisk until skin is gone. Remove pie crust from freezer and pour filling into the crust. Refrigerate for 4 hours before serving.