Wash the schnitzel and dab dry. Cut in half, season with salt and pepper and place in an ovenproof dish. Drain pineapple and mushrooms. Halve the pineapple slices. Spread mushrooms and pineapple on the cutlets.
Mix cream, crème fraîche, light and dark sauce powder. Season with salt, pepper and soy sauce. Pour over the escalopes. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 40-45 minutes. Tastes good with parsley rice