Making Light and Creamy Pesto Caprese Pasta Salad is straightforward. Follow these steps for a delicious outcome:

1. Cook the Pasta: Bring a large pot of salted water to a boil. Add the pasta and cook according to package instructions until al dente. Drain and rinse under cold water.
2. Prepare the Vegetables: While the pasta is cooking, halve the cherry tomatoes and set them aside.
3. Mix the Dressing: In a small bowl, combine the basil pesto and sour cream (or Greek yogurt). Stir until smooth and well blended. Adjust the taste with salt and pepper.
4. Combine Ingredients: In a large bowl, combine the cooked pasta, halved tomatoes, mozzarella balls, and chopped basil.
5. Add the Dressing: Pour the creamy pesto dressing over the pasta mixture. Toss gently until everything is well coated.
6. Drizzle with Olive Oil: Add a tablespoon of olive oil for a little extra richness and flavor, then toss again.
7. Chill: Let the pasta salad sit at room temperature or refrigerate it for about 30 minutes to allow the flavors to meld.
8. Serve: If desired, drizzle with balsamic glaze before serving for an added touch of sweetness.