Wash the potatoes and cook covered for about 20 minutes. Quench, peel and let cool
Clean, wash and chop the peppers. Clean, wash and slice the mushrooms. Peel and finely dice onion and garlic
Dab meat dry and cut into strips. Fry in 1 tablespoon of hot oil in a wide saucepan in portions all around. Season with salt and pepper and remove. Fry the onion, garlic, mushrooms and peppers briefly in the frying fat. Season with salt and pepper. Add meat again
Sprinkle with flour, sweat briefly. Stir in just under 1/4 l water, milk and stock. Bring to the boil and simmer for about 5 minutes. Refine with Cremefine and season to taste
Wash the thyme, pluck it. Pour the meat and vegetables into 4 oiled small ovenproof dishes or one large dish. Cut the potatoes into slices and spread on top. Sprinkle with thyme and cheese. Bake in a hot oven (electric cooker: 200 °C/ convection oven: 175 °C/gas: level 3) for 25-30 minutes