When the filling is ready, remove from the refrigerator and divide into 12 equal sized pieces. Shape into round balls and transfer to a plate.
Divide the dough into 12 equal sized pieces. Shape into round balls and transfer to a plate or a baking pan. Cover with a wet towel so they don’t dry out.
Place a ball of dough on a work surface dusted with flour. Roll out the dough into a circle 15 cm / 6 inches in diameter.
Brush the dough with some water and place a ball of filling in the center of the circle. Fold the edges inward from the bottom, top and two sides up to the ball of filling, creating a square. Press down on the edges to secure them.
Transfer to a baking pan lined with parchment paper. Repeat the same process for the remaining ingredients.
Brush the edges with the egg wash and sprinkle with sesame seeds. Bake for 25-30 minutes, until golden.
When ready, remove from the oven and allow them to cool a little before serving.