Place a large sheet of tin foil on a baking tray or shallow oven proof dish. Large enough that it will fold up into a large parcel.
Place the Cod portions on the foil. Sprinkle the parsley over the Cod. Then place a pile of grated cheese on top of each parcel.
Place the Cherry Tomatoes around the Cod portions. Add some salt & Pepper to taste.
Fold the tin foil up to make a sealed parcel.
Place in a preheated oven at gas 6 / 180º for about 20mins
Be careful when opening the parcel as the steam will very hot.