How to Make It
Combine soy sauce, pepper, and beef in a large zip-top plastic bag. Massage sauce into beef; let stand at room temperature 7 minutes, turning bag occasionally.
While steak marinates, heat a large grill pan over medium-high heat. Coat pan with cooking spray. Arrange pineapple and green onions in pan; cook 5 minutes or until well charred, turning to char evenly. Cut onions and pineapple into bite-sized pieces. Heat rice according to package directions; stir in pineapple, onions, and salt. Keep warm.
Add beef to grill pan coated with cooking spray; cook 3 minutes on each side or until desired degree of doneness. Serve beef with rice mixture.