Dressing: Mix together and set aside in refrigerator for 15- 20 minutes……. 3/4 cup sugar 1 tsp salt 1/2 tsp pepper 1 tsp onion 1/3 cup ketchup 1/2 tsp celery seed 1/2 cup oil 1/3 cup vinegar Tortellini Salad: 20 oz cheese filled tortellini (cooked …