01 -
Preheat oven to 175°C. Grease the bottom and sides of a 23-cm springform pan. Wrap the outside of the pan tightly in several layers of heavy-duty aluminum foil to ensure it is watertight for the water bath.
02 -
Combine crushed chocolate sandwich cookies with melted butter in a large bowl. Mix thoroughly. Press the mixture firmly into the base and slightly up the sides of the prepared pan.
03 -
Bake the crust for 10 minutes. Remove from oven and let cool on a wire rack. Lower oven temperature to 165°C.
04 -
In a medium saucepan, bring water to a gentle simmer. Place a heatproof bowl over the pan, ensuring it does not touch the water. Add chopped chocolate and espresso powder. Stir occasionally until completely melted, then remove from heat and keep over warm water until needed.
05 -
In a food processor, blend cream cheese until smooth, about 2 minutes. Scrape down sides. Add granulated sugar, brown sugar, and cocoa powder. Process until blended. Add eggs and yolks one at a time, processing just until combined.
06 -
With the machine running, slowly pour in heavy cream and vanilla extract. Process until just mixed, about 20 seconds.
07 -
Fold the melted chocolate mixture into the cream cheese batter until evenly blended and thick.
08 -
Pour half of the cheesecake filling onto the cooled crust. Scatter fresh raspberries over the filling in a single layer. Top with remaining batter, making sure all raspberries are covered.
09 -
Place the wrapped springform pan in a large roasting pan. Transfer to the oven. Carefully pour hot water into the roasting pan until it reaches 2.5 cm up the sides of the springform pan. Bake for 70 minutes, or until center is just set with a slight jiggle.
10 -
Remove the cheesecake from the water bath and place on a wire rack. Gently loosen foil. Run a thin knife along the edge to prevent cracking. Let cool completely in the pan.
11 -
Transfer cooled cheesecake to the refrigerator and chill for a minimum of 6 hours before unmolding and slicing.
12 -
Place chopped chocolate in a heatproof bowl. In a saucepan, bring heavy cream just to a boil; pour over chocolate. Allow to stand 1 minute, then whisk until smooth and glossy. Stir in butter until fully melted. Let cool at room temperature until thickened slightly.
13 -
Pour ganache over the chilled cheesecake, using a spatula to spread it evenly. Allow to set for about 1 hour at room temperature.
14 -
Cut with a thin, sharp knife wiped clean between slices. Garnish individual slices with chocolate sauce, fresh raspberries, and a dusting of cocoa powder as desired. Store covered in the refrigerator for up to 5 days.