• Bring a large pot of generously salted water to a boil. Cook the pasta according to package directions.
  1 pound (454g) package rotini or similar pasta
• Drain and rinse the pasta under cold water.

DRESSING:

• Meanwhile, in a large bowl, combine all the ingredients for the dressing. (if you are planning on letting this chill for longer than 2 hours, reserve 1/3 of the dressing for later)
  ¾ cup (175g) mayonnaise, ¾ cup (175g) sour cream, 3 tablespoons oil from sun-dried tomatoes, 3 tablespoons apple cider vinegar, 2 cloves garlic, minced, 1 tablespoon honey, 1½ teaspoons Italian seasoning, ½ teaspoon crushed red pepper flakes, salt and pepper to taste
  
• Add the pasta, chicken, tomatoes, cheese, basil, and onion to the bowl of dressing. Toss lightly to coat everything. Cover and chill for 2 hours. (if chilling for longer than 2 hours, when ready to serve, toss with the reserved dressing.
  3 cups (315g) cooked chicken, shredded or cubed, 2 cups (290g) cherry tomatoes, halved, 1 (8oz) (226g) mozzarella pearls, 1 cup (15g) packed fresh basil leaves, roughly chopped, ½ cup (70g) sun-dried tomatoes packed in oil, chopped, ½ cup (50g) grated parmesan cheese, ½ small red onion, thinly sliced