Cook tortellini according to package instructions until al dente, then strain and rinse under cool water to stop the cooking process.
While the tortellini is cooking, prep your fresh ingredients by chopping the spinach, halving cherry tomatoes, mincing garlic, and measuring out other components.
In a large bowl, combine the cooled tortellini with spinach, tomatoes, mozzarella pearls, basil, and minced garlic.
Drizzle olive oil and balsamic vinegar over the mixture before adding Italian seasoning along with salt and pepper; toss well until everything is evenly coated.
Allow the salad to chill in the refrigerator until ready to serve; this helps meld all the flavors together beautifully.
Just before serving, give it another toss to redistribute any dressing settled at the bottom and drizzle with balsamic glaze for an extra touch of flavor.