Dissolve yeast in warm milk.Then add 50 g sugar,butter softened,1 egg,salt.Knead the dough and put in a warm place for 30 minutes. At this time, prepare the filling:beat the eggs with the remaining sugar and vanilla,add sour cream,cottage cheese and beat well.Add the chopped plum and baking powder,mix well. Ready to roll out the dough into a thin layer and lay on a baking sheet,put the cheese-sour cream mass on the top to put the chopped apricots,sprinkle with nuts.Bake 45 minutes in a well heated oven 170S. The cake is ready,allow to cool approximately 1 hour. A pleasant tea.