Clean and wash the zucchini and cut or slice lengthwise into 8 thin slices. Wash the fish, pat dry and sprinkle with lemon juice. Season with salt and pepper and put 1 zucchini slice on each. Roll up and pin
Bring 3/8 l lightly salted water and wine to the boil. Cover the fish rolls and let them simmer at low heat for 8-10 minutes. Lift out, keep fish stock
Clean and wash broccoli and cut into florets. Cover and stew in little boiling salted water for about 5 minutes
Peel and finely chop the onion. Steam in hot fat until translucent. Sweat tomato paste and flour in it. Stir in fish stock and cream. Bring to the boil and simmer for about 5 minutes. Season to taste
Wash the prawns, dab dry. Drain broccoli. Fill both with the fish rolls in a greased flat casserole dish, pour sauce over them. Cook in the preheated oven (electric cooker: 225 °C/circulating air: 200 °C/gas: level 4) for 10-12 minutes. Served with: wild rice mixture