Crush up the Oreos in a bag or food processor, until you get fine crumbs.
Mix with the butter. Press into a 9 inch glass pie tin, or 4 mini pie tins.
OPTIONAL: Bake the crusts at 350 degrees for 5-6 minutes. Let cool.
In a bowl, add the chocolates.
In a saucepan over medium heat, combine the heavy cream and butter. Bring to a low boil.
Pour over chocolate and let sit for 5 minutes. Whisk until chocolate is melted and smooth.
Pour into crusts. Refrigerate at least 4 hours. Sprinkle with sea salt.