Place fillets on a grate over a broiler safe baking pan. Place under the broiler, about 6 inches away from the heat source. Cook for about 3 or 4 minutes. Turn fish, sprinkle with the rest of the cheese mixture and broil for another 3 to 4 minutes. This cook time is only and estimate. You will want to cook your fish according to how thick it is. If you purchase salmon steaks, for instance, which would be thicker and probably contain bone, they may take longer to cook. When fish flakes easily, it is usually done.