In a large pot, bring salted water to a boil and add the cheese tortellini. Cook according to package instructions until al dente, usually about 3-5 minutes. Drain and rinse under cold water to cool.
In a large mixing bowl, combine the cooled tortellini, cherry tomatoes, spinach, olives, and red onion.
In a separate small bowl, whisk together the pesto sauce and olive oil until smooth.
Pour the pesto mixture over the pasta salad and gently toss to combine everything evenly.
Season with salt and pepper to taste and sprinkle the grated Parmesan cheese on top.
Let the salad sit for about 15-20 minutes to allow the flavors to meld together.
Before serving, garnish the salad with fresh basil leaves for an extra burst of flavor.
Notes
Let the salad sit for a while to enhance the flavors.
Keyword pasta salad, pesto, tortellini, vegetarian