Cook Rotini Pasta according to directions.

Drain and Rinse with cold water.

While the pasta is draining, dice onion into small pieces. Set Aside.

Drain black olives and slice into small pieces and set aside.

In a large bowl, combine pasta and Italian dressing.

Stir pasta well making sure to coat all the past evenly.

Mix in onions and Black Olives.

Sprinkle McCormicks Salad Supreme on top of Pasta Salad and mix well.

Chill before serving.