Tortellini, Tomato, and Spinach Soup

I made this soup several weeks ago(oops!)...and forgot to post it! If you're looking for a light, easy to make soup- this is it. I will definitely make this again, however, next time I'm going to let the broth and herbs simmer a little bit longer. And maybe use Rotel tomatoes instead of plan just to spice it up a little.
Ingredients

* 1 tablespoon olive oil
* 1/2 cup minced onion (about 1/2 small onion)
* 1 garlic clove, minced
* 4-6 cups chicken broth or vegetable broth
* 1 (14 ounce) can whole tomatoes, coarsely chopped
* 1 (9 ounce) package fresh tortellini or dried tortellini
* kosher salt
* cracked black pepper
* 10 ounces fresh spinach or frozen spinach, defrosted and chopped
* 1/4 cup freshly grated Parmesan cheese (optional)

Directions

1.In a soup pot, heat olive oil over medium high heat.
2.Saute the onion and garlic, stirring often until onions are translucent, about 5 to 7 minutes.
3.Add broth and tomatoes, turn heat up to high, and bring to a boil.
4.Add the tortellini and cook according to package instructions.
5.When tortellini is almost done, add spinach and taste, adjusting seasonings with salt and pepper.
6.Serve immediately.
7.Garnish each serving with a sprinkling of Parmesan.

Source: Recipezaar