Ingredients:
Preheat the oven to 220C/425F/Gas 7.
Place the sun-dried tomatoes, garlic and basil in a mini-chopper or small
food processor and blend until very finely chopped. Stir into the boiling
water.
Arrange the potato slices and onion rings in a roasting tin and pour over
the tomato and herb liquid. Season with salt and black pepper and roast
for 30 minutes.
Once the potatoes are tender, scatter over the olives and arrange the cod
fillets on top of the potatoes.
Cut four thin slices from the lemon and place one on each fillet. Squeeze
over the juice from the rest of the lemon.
Season the fish, then return the roasting tin to the oven for 8-10 minutes
until the fish is just cooked. Divide between plates and serve.