method
1. Cook the potatoes in a large pan of boiling, salted water for 20 minutes until tender. Drain and set aside. When cool, cut them in half.
2. Preheat the oven to 200°C/180°C fan oven/Gas Mark 6. Put the tomato sauce into a frying pan with the mushrooms and 4 tablespoons of water. Bring the mixture to the boil and allow to bubble for 1 to 2 minutes.
3. Transfer the mixture to an ovenproof dish, add the olives and potatoes, then arrange the fish on top. Season with pepper and sprinkle with parmesan. Cook for 10 to 15 minutes, or until the fish is cooked. Sprinkle with basil, then garnish with basil sprigs before serving.
serving amount
serves: 4
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