Sprinkle broccoli with 1/2 tsp. (1.5mL) Mrs. Dash® Lemon Pepper and steam for 2 minutes. Rinse broccoli under cold water to cool; drain well. Combine onion, vinegar, oil, sugar and remaining Mrs. Dash® Lemon Pepper in shallow dish. Add broccoli; toss to coat. Cover and chill at least 3 hours, stirring occasionally.