01 -
Crush Oreo cookies into fine crumbs using a food processor or by sealing them in a bag and pounding with a rolling pin. Blend with melted butter until the mixture resembles wet sand.
02 -
Press the cookie mixture evenly into the base of a greased springform pan. Bake at 175°C for 8 minutes, then remove and allow to cool completely.
03 -
In a large bowl, beat the cream cheese with a stand or handheld mixer on medium speed until smooth and creamy.
04 -
Add granulated sugar to the cream cheese and mix until fully blended.
05 -
Add eggs one at a time, mixing at low speed and scraping down sides as needed to avoid overmixing.
06 -
Pour in the melted and cooled chocolate, mixing at low speed until combined.
07 -
Sift in the cocoa powder, add vanilla extract, and espresso powder if using. Mix gently to combine.
08 -
Stir sour cream or yogurt into the mixture until the filling is smooth and well-blended.
09 -
Pour the chocolate cheesecake batter over the cooled crust, smoothing the surface with a spatula. Bake at 175°C for 50–60 minutes, or until the edges are set and the centre has a slight wobble. Optionally, use a water bath to minimise cracking.
10 -
Once baked, turn off the oven and leave the door slightly ajar for 1 hour to allow gradual cooling.
11 -
Transfer the pan to a wire rack to cool to room temperature. Refrigerate the cheesecake for at least 4–6 hours, preferably overnight, until fully set.
12 -
Heat the heavy cream in a saucepan until steaming, then pour over the chopped chocolate in a bowl. Allow to stand for a few minutes, then whisk until glossy and smooth.
13 -
Pour the ganache over the cold cheesecake, spreading evenly to cover the surface. Chill for 30 minutes to set the ganache.
14 -
Release the cheesecake from the springform pan, transfer to a serving plate, slice with a warm knife, and enjoy.