Peel and wash the potatoes.
Grate and season with salt and pepper.
Squeeze well to remove the excess liquid.
Place one quarter of the potatoes in a hot pan with 1 tsp clarified butter and press flat.
Fry over a low heat until the rösti is lightly browned. Turn and brown on the other side.
Wash and slice the tomatoes. Season the minced meat with salt, pepper and paprika. Cover the rösti on one half with a few slices of tomato and a quarter of the minced meat.
Slice the cheese. Put a quarter of the cheese slices on top of the minced meat.
Fold the rösti over the filling, then slide it onto a sheet of baking paper on a baking tray. Repeat to make 3 more rösti. Put the tray with the stuffed rösti in the oven and cook at 220°C (200°C fan, gas 7) for 10 minutes.