Heat broiler and spray broiler pan rack with nonstick cooking spray. Rub steak with 2 teaspoons Cajun seasoning and place on prepared rack.
Spread steak fries and onion around steak; coat onion with cooking spray. Broil 7 minutes, remove onion, turn steak and fries over and broil 5 minutes longer or until steak is lightly charred (it will be medium-rare) and fries are crisp.
Slice steak, drizzle with 1 tablespoon steak sauce and top with onion.
Serves 6.
Per serving: 233 cal, 16 g pro, 18 g car, 2 g fiber, 11 g fat, 45 mg chol, 576 mg sod
