In a food processor or by hand, finely crush your cookie crumbs. Add sugar and melted butter and stir to combine.
Press crumb mixture into a 9" pie pan, and bake in preheated oven for for 8 to 10 minutes, or until warm, fragrant and lightly toasted.
Set aside to cool.
In heavy saucepan, heat butter, brown sugar, and salt to boiling, stirring frequently. Remove from heat; set aside.
In small bowl, stir cornstarch into 1/3 cup of the milk until dissolved. Add egg yolks; beat with whisk until blended.
Into saucepan with brown sugar mixture, pour remaining 2 cups milk, heavy cream and stir to combine. Add the cornstarch mixture. Heat to boiling over medium heat, stirring constantly. When pudding comes to a rolling boil, remove from heat. Allow to cool for 5 minutes.
Pour pudding into prepared pie shell. Refrigerate for 3 hours.
Beat heavy cream in a chilled bowl with electric mixer on high speed until soft peaks form. Slowly add sugar and continue to beat until stiff peaks form.
Spread whipped cream over cold pudding-pie and sprinkle with shaved chocolate. Chill until serving time.
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