Defrost the dough. Wash the fillets and pat them dry. Clean, wash and chop the vegetables. Peel and chop onion
Heat 1 tablespoon of oil. Fry the fillets for about 10 minutes. Season and take out
Heat 1 tablespoon of oil. Sauté mushrooms and celery. Season and remove. Sauté onion in frying fat. Boil up with 1/4 l water and soy sauce. Stir in stock and cranberries. Thicken sauce and season
Place the puff pastry sheets on top of each other and roll out into a square (approx. 40 x 40 cm). Quarter the dough. Put 1 fillet and 1/4 of the mushroom mixture in the middle. Fold the dough over it and press it down. Place on a cold rinsed baking tray
Bake in the preheated oven (electric cooker: 200 °C / convection oven: 175 °C / gas: level 3) for about 30 minutes
Warm up the sauce, extra rich. Served with: Boiled potatoes
Drink: cool white wine