Bring a large pot of salted water to a boil. Add the rotini pasta and cook according to package instructions until al dente. Drain and rinse the pasta under cold water to cool it down.
While the pasta is cooking, halve the cherry tomatoes and mozzarella balls, and finely chop the red onion and basil.
In a large mixing bowl, combine the cooked and cooled pasta, cherry tomatoes, blueberries, mozzarella balls, red onion, and basil.
In a small bowl, whisk together the olive oil, red wine vinegar, salt, and pepper.
Pour the dressing over the pasta mixture. Toss gently to combine all the ingredients evenly. Serve immediately or refrigerate until ready to serve.
This makes 4 servings. Each serving is 13 WW Points. Enjoy!