Make a dough with the flour, water, egg and oil. Wait 15 minutes. Separate the dough into 5 equal pieces. Roll the 5 pieces with a pastry rolling pin. Spread melted butter on each surface and place one on the other. Let stand 1/2 hour.

Now roll out the dough as fine as possible into a large disk. On one half of the disk, place small portions of the filling, be it white cheese or meat mixed with onion. The small portions should be spaced about 10 cm. apart. Fold the empty half over the filled half. Around the base of each portion of filling cut a half-moon with an aluminum saucer or something similar. Press around the circumference of each mound with your fingers to close it well, then fry the borek in oil.