Prepare Oreo Pie Crust according to Picky Palate recipe. Let cool completely.
For cheesecake layer, place softened cream cheese, heavy cream and sugar into a medium mixing bowl, beat until well combined. Gently stir in whipped topping. Carefully spread over bottom of Oreo crust.
For Oreo Pumpkin Layer, place pumpkin, pudding mix, heavy cream, cinnamon and nutmeg into a medium mixing bowl. Beat until well combined. I just use a spoon for reference. Stir in crushed Oreo Cookies. Spread over cheesecake layer. Refrigerate for at least 3 hours before serving. Before serving top with mounds of whipped cream and crushed Oreos.