POUR 1/2 cup of the marinade over salmon in resealable plastic bag. Seal bag; turn to evenly coat salmon with the marinade. Refrigerate 30 min. to marinate.
PREHEAT broiler. Remove salmon from marinade; discard marinade. Place salmon on rack of broiler pan. Broil, 4 to 5 inches from heat, 6 to 8 min. or until salmon flakes easily with fork.
MEANWHILE, cook remaining 1/4 cup marinade in medium saucepan on medium-high heat until heated through. Add broccoli and peppers; cook 2 min., stirring occasionally. Add broth; bring to boil. Stir in rice; return to boil. Cover; remove from heat. Let stand 5 min. or until all liquid is absorbed. Stir in onions. Serve salmon with the rice.