Prepare the Crust: Crush the Oreo cookies into fine crumbs using a food processor or by placing them in a sealed plastic bag and crushing them with a rolling pin. Mix with melted butter and press evenly into the bottom of a springform pan. Refrigerate while preparing the filling.
Make the Filling: In a bowl, beat the cream cheese until smooth. Add the melted chocolate, cream, and condensed milk, mixing until fully combined and silky.
Assemble the Dessert: Pour the chocolate cream cheese mixture over the prepared crust, spreading it evenly.
Chill: Refrigerate for at least 2 hours or until set.
Serve and Enjoy: Slice and serve chilled. Garnish with chocolate shavings, fresh berries, or whipped cream for extra indulgence.