Peel, wash and halve the potatoes. Clean, wash and cut spring onions into small pieces. Clean, wash and slice the tomatoes. Fry the potatoes in 2 tablespoons of hot oil, turning for about 10 minutes, season with salt. Fold in spring onions and put aside.
Heat the remaining oil in the frying fat. Fry the minced meat for about 10 minutes while turning. Add tomato paste. Season with salt, pepper and thyme. Fold in the prepared potato mixture and tomatoes and fill into an ovenproof dish. Crumble feta cheese over it. Mix sour cream and eggs. Season again with salt and pepper and pour over the casserole. Bake in a preheated oven (electric: 200 °C/ gas: level 3) for 20-30 minutes.
Fold in the prepared potato mixture and tomatoes and fill into an ovenproof dish. Crumble feta cheese over it. Mix sour cream and eggs. Season again with salt and pepper and pour over the casserole. Bake in a preheated oven (electric: 200 °C/ gas: level 3) for 20-30 minutes. Serve garnished with parsley and pepperoni