Cook rotini to desired doneness as directed on package, adding broccoli during last 3 minutes of cook time.
Drain rotini and broccoli; rinse with cold water until cool. In large bowl, mix cooked rotini and broccoli with remaining salad ingredients.
In medium bowl, mix dressing ingredients. Pour dressing over salad; toss until well mixed. Cover; refrigerate at least 2 hours. Stir before serving.