This recipe uses a flavorful tomato and olive sauce to add flavor to halibut. The fish is seasoned with salt and pepper, then seared in a hot pan until golden brown. A simple sauce is made by sautéing garlic, onions, and tomatoes in olive oil, then adding olives and capers. The sauce is poured over the fish and served with a side of vegetables or rice. The result is a delicious and flavorful dish that is perfect for a weeknight dinner.