How to make
Cook the potatoes and allow them to cool. Cut them into cubes and place them into a greased baking dish. Season with salt, black pepper and oregano.
Mix the yogurt, eggs and crumbled feta cheese into a bowl. Pour the egg mix on top of the potatoes making sure it covers them completely.
Slice the butter and arrange it on top.
Preheat the oven to 360°F (180 degrees) and bake for 20 minutes. Add the grated yellow cheese and bake for 20 more minutes, until the cheese melts and obtains a golden brown crust.
Enjoy your meal!