Combine first 7 ingredients in a large zip-top plastic bag. Add fish to bag; seal. Marinate in refrigerator 1 hour, turning occasionally.
Coat casserole dish with cooking spray and add salmon and marinade. Put in a 400 degree oven on broil for 15-20 minutes, turning once. Place 1 fillet on each of 4 plates; drizzle each serving with about 2 teaspoons sauce. Sprinkle each serving with 1 tablespoon green onions and 3/4 teaspoon sesame seeds.
I marinated this ALL day long, so it really had a nice flavor. It might be my favorite salmon recipe yet!