Yeast and salt are diluted in warm milk. Add to the flour mixture.
Knead the dough and put it away in the cold.
Meanwhile, beat cottage cheese with sugar and sour cream in a blender, add vanilla.
Beat the egg whites to peaks and add to the curd filling.
Roll out the dough on parchment, carefully transfer to a baking sheet, put the curd filling in the middle. Make jam strips. You can take any jam, I have raspberry.
Carefully wrap the edges of the biscuit. Use a wooden stick to make streaks on the filling.
Bake in a hot oven at t-180 * for 25-30 minutes. When ready, sprinkle with powdered sugar. Enjoy your meal!