Bring a large pot of salted water to a boil. Add the cheese tortellini and cook according to package instructions until al dente. Drain and rinse with cold water to cool.
In a large mixing bowl, combine the cooled tortellini, halved cherry tomatoes, chopped spinach, grated Parmesan cheese, and finely chopped red onion.
In a separate small bowl, whisk together the creamy pesto, lemon juice, and olive oil until smooth.
Pour the pesto dressing over the tortellini mixture and gently toss until all ingredients are well-coated.
Season the salad with salt and pepper to taste, and adjust the creamy pesto amount if desired for more flavor.
Chill the salad in the refrigerator for at least 30 minutes to allow the flavors to meld together.
Serve cold or at room temperature, garnished with additional Parmesan and fresh spinach if desired.
Notes
Chill for at least 30 minutes for best flavor.
Keyword pasta salad, pesto, tortellini, vegetarian