- 1. Preheat the grill to high and lightly oil a large shallow flameproof dish.
- 2. Arrange the fillets skin side down in the dish and brush with a little oil. Grill for 2 minutes.
- 3. Remove the dish from the grill turn the fish over and top each fillet with a scrunched slice of ham.
- 4. Mix together the cheese and onions scatter over the fish and season with salt and pepper.
- 5. Return to the grill for 5 minutes or until the fish flakes easily with a fork.
- 6. Serve with a green salad.