Mix flour, sugar and baking powder
In another bowl mix one egg and one yolk
Add soft butter and eggs in a dry mixture ( flour, sugar and baking powder)
With your hands try to mix it and it will turn into elastic dough
Divide the dough in 2 pieces ( one should be bigger- for the first layer), put it in a form and spread it
On top put the whole jam and make with your hands some dough pieces and put on top
Grease the cover with a yolk and put in the oven 180 degree for 30-40 minutes