Place 1 pack of Oreos into the food processor and blend to a fine crumb. Pour the butter in and blend again.
Pour the Oreo and butter crumb into a small pie dish and spread out along the bottom and up the sides to make a pie crust. Use a ¼ cup measure or a spoon to smooth it out and compact it. Place the dish in the fridge for 30 minutes to set.
Pop the other pack of Oreos into the food processor, saving a few Oreos for decorating, and blend to a fine crumb again. Pour the crumb into the whipped cream and mix together.
Pour the cream mix into the set pie crust and spread out. Top with a few Oreo halves and some crumbs.