Place the flour and the margarine or butter in a bowl and rub them together until combined.
Add salt, pepper, oregano, the yogurt, the grated cheese and hafl the egg.
Mix and when the ingredients are incorporated knead until you have a dough that doesn't stick to your hands.
Wrap the dough in cling film and set it aside in the fridge to rest for about 30 minutes.
Coat a round baking tray of 30 xm wtih flour and roll out a filo sheet that is slightly larger than the sides of the baking tray.
Brush the filo sheet with the second half of the egg and sprinkle with breadcrumbs.
Place a layer of tomatoes cut into slices, season with salt and pepper, sprinkle with some oregano and then breadcrumbs.
Repeat until you run out of tomatoes.
Spread the crumbled feta cheese on top, pour a liggle oil over it and fold in the excess filo sheet.
Bake in a preheated oven at 180°C for about 40 minutes.
