Preheat oven to 350 degrees.
Put the cookies into the work bowl of a food processor and process until finely ground. Alternatively, you can place the cookies in a plastic bag and finely crush them with a rolling pin.
Mix the cookie crumbs with the sugar and salt in a bowl then add melted butter and stir to combine until mixture is the texture of wet sand.
Press the crumb mixture firmly and evenly against the bottom and up the sides of a 9-inch pie plate. You can use the bottom of a measuring cup to smooth the bottom crust.
Bake for 8 minutes at 350 degrees. Remove and allow to cool before filling.