Preheat broiler. Mix first 8 ingredients until blended., Line a 15x10x1-in. baking pan with foil; coat foil with cooking spray. Place tilapia in pan; sprinkle with salt., Broil 3-4 in. from heat 2-3 minutes per side. Spread cheese mixture over fillets. Broil until topping is golden brown and fish just begins to flake easily with a fork, 1-2 minutes.