Figured I dig up this old thread. My niece requested this cheesecake so I obliged 
It turned out great if anyone is interested in making it.
Death by Chocolate Cheesecake.
I think I found it on Delish. Not sure though I found and saved so many. This was the most doable for me. I can’t do too overly complicated … then I’ll just lose interest 
Death By Chocolate Cheesecake
INGREDIENTS
COOKIE CRUST
24 whole Oreo cookies
6 tbsp. melted butter
Pinch of salt
CHOCOLATE CHEESECAKE
4 (8-oz.) packages of cream cheese - softened
3/4 c. granulated sugar
1/2 c. packed light brown sugar
1/4 c. cocoa powder
1/4 tsp. salt
4 large eggs - room temp
9 oz. bittersweet chocolate, chopped and melted
CHOCOLATE GANACHE
1 1/2 c. chocolate chips
3/4 c. heavy cream
Chocolate shavings, for garnish
DIRECTIONS
Preheat oven to 350° and position an oven rack in the middle of the oven.
Make crust: In a large Ziploc bag or a food processor fitted with a metal blade, crush or blend Oreos until fine crumbs form. Transfer to a bowl and pour in melted butter. Add salt and stir until crumbs are completely coated and moist. Coat a 9" springform pan with cooking spray and press Oreo mixture into pan and 1/3 of the way up the sides, packing tightly.
Make cheesecake: Use hand mixer or stand mixer. In a large bowl beat cream cheese, sugars, cocoa powder, and salt until smooth. Add eggs one a time, beating well between each addition. Fold in melted chocolate. (Keep warm until ready to fold in - if cold it will not mix in right)
Pour cheesecake filling over crust.
Bake until cheesecake is only slightly jiggly in the center, 1 hour to 1 hour 15 minutes. Refrigerate cheesecake until totally chilled, at least 4 hours and up to overnight.
Make ganache: Place chocolate chips in a medium heatproof bowl and set aside. Heat heavy cream in a small saucepan over medium heat. When bubbles begin to break the surface around the edges of the pan, turn off the heat. Pour the hot cream over chocolate chips, whisking constantly until the sauce is smooth. This takes a couple minutes to come together.
Pour ganache on top of the cheesecake. Return to the refrigerator for about 10 more minutes to let the ganache set.
Garnish with chocolate shavings.