1In shallow glass dish or pie plate, mix lime juice, 2 tablespoons cilantro, the garlic and salt. Cut fish steaks into 4 serving pieces. Add fish to lime mixture, turning several times to coat. Cover; refrigerate 1 hour, turning once, to marinate.
2Meanwhile, in small bowl, mix all sauce ingredients; refrigerate.
3Set oven control to broil. Spray broiler pan rack with cooking spray. Remove fish from marinade; discard marinade. Place fish on rack in broiler pan. Broil with tops 4 inches from heat 7 to 10 minutes, turning once, until fish flakes easily with fork. Serve with sauce.