Preheat the Oven: Begin by preheating your oven to 160 degrees Celsius (or 140 degrees for circulating air). It’s crucial to get the temperature just right for the perfect bake!
Prepare the Springform Pan: Line the bottom of a springform pan (Ø 26cm) with baking paper. This step ensures that your cake will come out beautifully without sticking.
Make the Cookie Base: Finely crush the butter cookies, using either a freezer bag or a food processor. Melt the butter in a saucepan, add the crushed cookies, and mix well. Press this mixture firmly into the bottom of the prepared pan. Place in the fridge to cool while you prepare the filling.
Prepare the Chocolate and Filling: Roughly chop around 2 chocolate bars and set them aside for decoration. In a mixing bowl, combine the lean curd, sour cream, sugar, vanilla sugar, and cornstarch. Beat in the eggs and neutral oil, mixing until smooth. Then, fold in the chopped chocolate.
Combine and Bake: Pour the curd mixture over the chilled cookie base and smooth out the top. Bake in the lower third of the preheated oven for about 55 minutes. After this time, sprinkle the reserved chocolate pieces on top and bake for another 10 minutes to allow them to melt slightly.
Cool and Serve: Once done, let the cheesecake cool completely on a wire rack. It’s best to refrigerate it for at least 4 hours, or overnight, allowing the flavors to intensify. Cut into pieces and enjoy!