Sour the fish with lemon juice, season with salt and pepper and place in a baking dish. Dice the onion and bell pepper and fry briefly in a little oil in the pan. Add the cream and parsley and lightly salt and pepper, as the fish is already seasoned. Pour the mixture over the fish and sprinkle with the cheese.
Bake at 180 ° C for 20 - 30 minutes. Either rice, mashed potatoes, potatoes, pasta or gnocchi are enough.