Crispy layer: The walnuts fuck in large pieces. Put all ingredients in a bowl and hands Knead until a uniform mixture. chocolate plum jam: Boil water with sugar. We put in syrup cleaned plums and boil on medium stove until soft fruits (nd me stood a rare sauce, not as thick as in jam). We put in plum jam 20 g butter and 2 (180-200g) chocolate, broken into pieces. Stir gently to mix the sweet with the chocolate and the butter. removed from the heat and leave to cool. On the cake: Beat with mixer the oil, soft butter and sugar. Add the eggs one by one, beating after each one briefly. Put the sour cream and cinnamon. Sprinkle half the flour, baking powder on it and mix at low speed with a mixer. It is the remaining flour and mix again. heated the oven to 180S degrees. Put baking paper into a round shape with a diameter of 25 cm. Carefully pour cake batter in the form and bake in preheated oven for about an hour. (Check the readiness with a stick). subtract the cake from the oven and switch heaters on top heater. On the finished cake arrange the plums of chocolate sweet (if you leave plenty of sauce to season the cake catering). merger put heaps of mixture and crispy layer cake back in the oven. Wait to turn pink slightly crunchy top layer and remove from oven. Serve cake, topped chocolate - plum sauce.