Side

Fry the finely chopped onion and minced beef in oil until cooked, then season with salt and pepper
Grease a round baking tray with oil
Place a layer of filo pastry in the tray
Spread a thin layer of the filling over the pastry
Place another sheet of filo pastry over the filling and brush it well with oil
Spread another layer of filling and cover with a sheet of filo pastry
Repeat layering filling and filo pastry until you have five or six layers
Cover the top with a final sheet of filo pastry
Bake at 200ºC/392ºF for 30 minutes
Cut into quarters and serve