01 -
Combine finely crushed Oreo cookies with melted unsalted butter in a mixing bowl. Stir until the mixture resembles wet sand and is evenly moistened.
02 -
Press cookie mixture firmly and evenly into the base of a greased 23 cm springform pan. Bake in a preheated oven at 175°C for 8 minutes. Remove and allow crust to cool completely on a wire rack.
03 -
Beat room temperature cream cheese in a stand mixer or with electric beaters until smooth and creamy, scraping down the bowl as needed. Gradually add granulated sugar and beat until fully integrated and glossy.
04 -
Add eggs one at a time, mixing on low speed and scraping the bowl between additions. Avoid overmixing to prevent excess air in the batter.
05 -
Gently fold in melted, slightly cooled semisweet or dark chocolate until fully combined, creating a uniform chocolate base.
06 -
Add cocoa powder, vanilla extract, and espresso powder if using. Mix briefly until just incorporated. Stir in sour cream or Greek yogurt for added richness and smooth texture.
07 -
Pour the chocolate cheesecake filling over the cooled cookie crust, smoothing the top. Bake at 175°C for 50–60 minutes, or until the edges are set and the centre remains slightly wobbly.
08 -
Turn off the oven and prop the door open. Let the cheesecake cool gently inside the oven for 1 hour to prevent surface cracks.
09 -
Transfer cheesecake to a wire rack and cool completely at room temperature. Refrigerate for at least 4–6 hours, preferably overnight, to allow the texture to set fully.
10 -
Heat heavy cream in a small saucepan or microwave until just steaming. Pour over chopped chocolate in a bowl, let sit for 1 minute, then stir slowly until silky and smooth.
11 -
Spread ganache evenly over the chilled cheesecake. Return to the refrigerator for 30 minutes, or until ganache is set and glossy.
12 -
Release the cheesecake from the pan, slicing with a hot, clean knife for neat edges. Serve as is or with whipped cream and fresh berries as desired.