Cook the rotini pasta according to package instructions until al dente. Drain and rinse under cold water to stop the cooking process.
In a large mixing bowl, combine the cooked pasta, cherry tomatoes, mozzarella balls, and chopped basil.
In a small bowl, whisk together the olive oil, balsamic vinegar, garlic powder, salt, and pepper.
Pour the dressing over the pasta mixture and toss gently to combine.
Taste and adjust seasoning if necessary. Serve immediately or refrigerate for at least 30 minutes to allow flavors to meld. This salad can be enjoyed cold or warmed up slightly.