We make baking tin with pendulum bottom as she smeared with butter and cover with baking paper. -Heat the oven to 160 C with blowing. Break the chocolate into pieces and melted with the butter in microwave on medium power for 2 minutes, stirring halfway time. Can melt and water bath. Beat eggs with sugar for about 5 minutes with a mixer until a thick cream. Add the melted chocolate and mix with a spoon gently to keep cream fluffy. Mix ground walnuts with the flour and add 1/4 tsp salt. Pour the flour mixture to the chocolate and mix again thoroughly with a spoon until a uniform mixture. Pour into pan and bake 40 minutes slightly below the average level of the oven. When the base is ready, remove it to cool completely and then we take it from the form. Stir the feta cheese Mascarpone, sour cream, add powdered sugar to taste and a little rum extract for flavor. Soak gelatine in 100-something ml cold water to swell. Then warm it up on the stove, stirring constantly, to become transparent, without boiling. Cut the apples into thin slices. distribute the cream on the base with a spatula. Arrange apples as we wish and coated them with gelatin using a brush. Leave to harden in the fridge.