Ingredients.

Chop into crumbs flour butter and sugar. Soda repay in sour cream, add to flour mixture along with egg.

Quickly knead the dough, wrap in cling film and put into the refrigerator while making the filling.

Citrus blanched, cut.

Skip through Mincer, add sugar, cinnamon, starch.

Divide the dough in half, roll it out in layers according to size of pan. Using a rolling pin, to move the layer of dough on a baking sheet (easier to roll out immediately on paper or Mat). On the dough spread the filling, cover with the second layer, the edges stung. The top prick with a fork, brush with egg. Bake in a preheated 180 degrees oven for 35-40 minutes.