Mix the flour, the butter, the water and 5 spoons of sugar and put in the refrigerator for 20 mins

When you take it out, put the dough it in a pan, put blueberries on top and put in the freezer for 20-25 mins

Preheat the oven to 200C°

When you take it out, put it in the oven for 20 mins

Put in a separate bowl the yogurt, the egg, the other 5 spoons of sugar and frozen blueberries.

Take out the dough with the blueberries and add the stuffing on top and put in the oven for half an hour

Take it out and let it cool down (it might not smell good but it's really delicious) and you can put powdered sugar on top (after it's cooled down) if you want it to be sweeter