The recipe is given for 2 pies in the form of 20 cm. So if you are going to make 1 pie, then take more of the form.
I always cook the dough in the bread maker To do this, load all the ingredients and prepare it in the "dough" mode, it should increase in volume by 2 times and be moderately dense. The amount of flour you need to look at in the process, you may need to add a little when kneading.
I divided the finished dough into 2 parts (2 pies)
From blackberries to leave whole berries, the most ripe by the number of buns in the pie. Pour the rest of the blackberries with sugar and mash with a masher. Take sugar to taste.
Preheat the oven to 190 degrees.
Roll out part of the pie dough into a rectangle.
Brush with mint blackberries, backing away from the edges.
On the long edge, lay the blackberries according to the number of buns, I have 5.
On the berry side, wrap the dough in a roll. Pinch the edges.
Cut the roll into pieces, so that each part remains a berry. It easy to reach location with your fingers. And immediately spread the rolls cut up in a greased form. If a little grated blackberries leaked out, it does not matter, collect it and put it on top.
Top with beaten egg and sprinkle with sugar.
Bake until tender, 30 minutes.
Remove from the oven, drizzle with water and cover with a towel for 15 minutes.