Fill the butter biscuits into a freezer bag and close it tightly. Grind them finely with a rolling pin. Melt butter in a pot and mix with the cookie crumbs. Spread the biscuit mixture evenly in the fat pan of the oven and press down firmly. Let it cool down. In the meantime, mix sugar, quark, cream cheese, lemon juice, eggs, semolina and pudding powder. Spread the chocolate bars evenly on the biscuit base.
Carefully spread the quark mixture on top. Bake in the preheated oven (electric cooker: 175 °C/ convection oven: not suitable/ gas: level 2) for approx. 1 hour. After 45 minutes of baking time, mix the candy and hazelnuts, sprinkle evenly on the cheese mixture and bake until done. Take the cake out of the oven. Place on a cake rack and allow to cool completely. Decorate with mint chocolate bars and dust with cocoa