Prepare your ingredients. Chop the onion, finely mince the garlic, peel and finely slice the carrots, chop the bell pepper, and quarter and slice the zucchini.
In a large pot, cook the Italian sausage over medium-high heat for 5 to 6 minutes, or until the meat is no longer pink.
Drain the excess grease from the cooked sausage and transfer it to a plate lined with paper towels to help soak up more of the grease.
Using the same pot (no need to clean out sausage remnants), add a little oil to the pan and cook the chopped onion over medium heat 6-7 minutes or until translucent.
Add the minced garlic and cook for one minute more.
Add the broth, stewed tomatoes, tomato sauce, carrots, zucchini, bell pepper, basil, and oregano. Also add the sausage back to the pot and stir well. Break up the tomatoes with your fingers, if smaller pieces are desired.
Bring the soup to a boil over medium heat, then reduce the heat to low. Simmer, uncovered, for about 30 minutes.
Add the tortellini and simmer another 30 minutes.
Serve with fresh grated Parmesan cheese, if desired.
Enjoy!