Add between 23-25 Oreo or other chocolate cream filled cookies to a food processor and pulse until a fine crumb is formed. You should get about 2 cups.Add in 5 tablespoon of melted unsalted butter and a pinch of salt and stir to combine.Dump the crumb mixture into a 9 inch pie dish and use your hands or the bottom of a measuring cup to press the crust into the bottom of the dish and up a couple inches on the side. Make sure there are no gaps in the crust.Use your fingers to gently press down on the outer rim of the crust to form a flat even surface. Then place the pie dish into the freezer for at least 15 minutes to firm up before adding the filling.*Notes* If you don't have a food processor you can crush the cookies by placing them into a plastic or silicone bag and bashing with a rolling pin until a fine crumb is formed.