Crush the Oreo cookies into fine pieces.
Mix the melted butter with the Oreo cookie crumbs and press evenly onto the bottom of a cake pan.
Soften the cream cheese and mix in the sugar.
Add the eggs one at a time, mixing well after each addition.
Add the melted dark chocolate and heavy cream, then mix until well combined.
Pour the batter over the Oreo crust.
Bake in a preheated oven at 170°C (338°F) for 40 minutes, then let it cool.
Pour chocolate ganache over the cooled cake to finish.