Beat the softened cream cheese until smooth, then add unsweetened cocoa powder, powdered sugar, and vanilla extract. Mix until combined, then fold in heavy whipping cream until stiff peaks form.

Crush dark chocolate Oreos into fine crumbs, then mix with melted butter. Press the mixture into an 8x8-inch pan and chill for 30 minutes.

Whisk together chocolate fudge pudding mix and milk until thick, then refrigerate for 10-15 minutes.

Melt semi-sweet chocolate chips, then combine with the cream cheese mixture. Fold in remaining whipped cream until light.

Spread the cheesecake mixture over the crust, then layer on the pudding. Top with whipped cream and garnish as desired.

Cover and refrigerate for at least 2 hours or freeze for 1 hour before serving.