Crush the Oreo cookies inside a zipper baggie. I use the flat side of a meat mallet.
Add the crushed Oreos to a bowl with the melted butter and mix with a fork until combined.
Press the Oreo cookie mixture into the bottom of the pan until no gaps remain.
Set the crust in the fridge to chill while you make the cheesecake filling.
Pour into the chilled crust, pressing it evenly into the pan with a spatula. Chill the cheesecake for 4 hours, or overnight, in the fridge before serving.