01 -
Preheat oven to 163°C. Spray a 23x23 cm square pan with nonstick spray. Line the bottom and two sides with parchment paper, then spray again.
02 -
Process Oreos into fine crumbs. Combine crumbs with melted butter in a bowl using a fork.
03 -
Press the crumb mixture firmly into the bottom of the prepared pan using the bottom of a measuring cup. Do not press up the sides.
04 -
Bake the crust for 12 minutes in the preheated oven.
05 -
Melt the chocolate bar in a microwave-safe bowl using 15-30 second intervals, stirring well after each until smooth.
06 -
Beat cream cheese, sugar, and cocoa powder on high speed for 2 minutes. Scrape down the bowl sides.
07 -
Mix in melted chocolate, heavy cream, and vanilla extract on medium speed until homogeneous.
08 -
Add eggs and mix on low speed just until combined.
09 -
Pour filling over crust and bake for 40 to 50 minutes until edges are set but center slightly jiggles.
10 -
Turn off oven, crack door open, and let bars cool inside for 20 minutes. Transfer to rack to cool completely.
11 -
Cover with foil and refrigerate for at least 6 hours or overnight.
12 -
Heat heavy cream over medium-low heat until steaming. Pour over chocolate chips and let sit for 2 minutes, then stir smooth.
13 -
Remove bars from pan and parchment. Spread ganache evenly over top using an offset spatula. Chill for 10 minutes in freezer if serving immediately, otherwise store in fridge until slicing.