Heat olive oil in a large pot over medium/high heat. Add onion and garlic. Cook until tender. Stir in red pepper flakes. Add in zucchini, squash, red pepper and cook until soft. Add in chopped fresh tomatoes. Cook briefly.
Stir in canned tomatoes, broth, and water.
Add in rosemary. Let simmer for 10-15 minutes.
Stir in tortellini and spinach. Cook until the tortellini is soft and cooked all the way through.