Follow these simple steps to create your Pesto Pasta Salad:

1. Cook the Pasta: In a large pot of salted boiling water, cook the pasta according to package instructions until al dente. Drain and rinse under cold water to stop the cooking process.
2. Prepare the Vegetables: While the pasta cooks, prepare your vegetables. Halve the cherry tomatoes, dice the cucumber and bell peppers, and finely chop the red onion.
3. Mix the Salad: In a large mixing bowl, combine the cooled pasta, pesto sauce, cherry tomatoes, cucumber, bell peppers, red onion, and mozzarella balls. Toss gently to combine.
4. Add Cheese: Sprinkle the grated Parmesan cheese over the salad and toss again. Season with salt and pepper to taste.
5. Chill: Cover the bowl with plastic wrap or a lid and refrigerate for at least 30 minutes to allow the flavors to meld.
6. Garnish: Before serving, garnish with fresh basil leaves for an added touch of flavor and color.

These steps will guide you in effortlessly creating your incredible Pesto Pasta Salad.