Add cold butter to the sifted flour. Grind into crumbs.
Add sugar, salt, baking powder and soda. Mix well.
Add sour cream and egg.
Knead the soft dough. Put the dough in a bag and put it in the refrigerator for 30-40 minutes.
Prepare the crumbs. Mix flour and sugar. Add the butter. Grind into crumbs. Put it in the refrigerator.
Preparing the filling. Add sugar and eggs to the curd. Punch until smooth.
Add the starch and mix well.
Roll out the dough into a layer. Spread in a form greased with butter. Transfer the dough to the mold. Remove excess dough around the edges. We make punctures with a fork.
Spread the filling.
From the remains of the dough, make five bundles.
Spread the fillings on top. Sprinkle with half the crumbs.
Spread the fruit and berries. Sprinkle the rest of the crumbs on top.
Bake at 180 ° C for 40-50 minutes. Allow to cool completely in the form.