Onions peel, halve. Clean and wash the mushrooms. Cut everything into slices. Dice bacon finely. Dab fillets dry. Fry in 1 tbsp. hot oil in a large pan for about 5 minutes. Season, take out
Skip the bacon in the frying fat. Fry onions and mushrooms. Stir in 300 ml water, cream and stock. Bring to the boil and simmer for about 5 minutes. Season to taste with salt, pepper and mustard, thicken with sauce thickener
Place the fillets in an oiled casserole dish or a wide roasting pan (with lid). Pour sauce over them. Cover and braise in a preheated oven (electric cooker: 175 °C/circulating air: 150 °C/gas: level 2) for approx. 45 minutes. After about 30 minutes continue to braise open. Wash and chop the parsley and sprinkle over it. Served with: baguette and salad
Drink: cool white wine