How to Make It
Preheat the oven to 200°C/390°F/Gas Mark 6
Pour the chopped tomatoes into an ovenproof dish
Stir in the courgette and mix well.
Bake in the oven for 20 minutes, or until the courgette is cooked.
Meanwhile take a piece of kitchen foil large enough to wrap the cod steak in and lightly oil it. Place the fish in some kitchen foil and sprinkle with the lemon juice and thyme.
Close up the foil parcel and place it in the oven. Bake in the oven for 20 minutes, or until the fish is cooked.
When the courgette has been in the oven for 20 minutes (around 5 minutes before the fish is ready), remove from the oven, scatter grated cheese over the top and grill until the cheese bubbles. Serve with the fish.