Peel and wash the potatoes and cook them in boiling salted water for about 20 minutes. Peel and halve shallots and cut into fine strips. Coarsely chop the raisins. Wash thyme, shake dry, pluck leaves from stalks and chop finely
Cut 100 g butter into cubes. Heat 2 tablespoons of it in a pot. Sauté shallots in it, add raisins and thyme. Deglaze with cider and simmer gently for about 4 minutes. Add the rest of the diced butter and let it melt. Keep sauce warm
Wash the meat and dab dry. Heat oil in a pan. Season the steaks with salt and pepper and fry over a high heat for about 3 minutes, turning them over. Wash the apple and remove the core with an apple corer. Cut apple into 4 thick slices. Cut cheese into slices as well. Cover steaks first with apple slices, then with cheese. Put them on a baking tray. Bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: see manufacturer) for 5-8 minutes
Drain the potatoes. Add milk and 1 tablespoon butter and mash to a coarse masher. Season to taste with salt and nutmeg. Arrange steaks and mashed potatoes on plates. Serve with sauce