This Caprese pasta salad is fresh, colorful, and easy to make ahead. Tender rotini is tossed with juicy grape tomatoes, creamy mozzarella pearls, red onion, sun-dried tomatoes, and a simple red wine vinaigrette. Add fresh basil and a drizzle of balsamic glaze just before serving for a bright summer salad that is perfect for BBQs, potlucks, and lunches.