In a large Dutch oven, brown sausage. Once it has browned, about 5 minutes, drain excess fat if needed.
Melt butter in the pot. Add onions cook on medium-high heat for 5 minutes until softened and translucent.
Add garlic, basil, oregano, salt, pepper, and flour to the pot and cook one minute on medium heat. Stirring frequently.
Slowly add in chicken stock while stirring so the flour doesn't clump.
Add the can of whole tomatoes to the pot. Break up the whole tomatoes with a potato masher or fork until only chunks remain. Add remaining cans of crushed tomatoes, tomato sauce, and brown sugar.
Bring to a roaring boil and then simmer for 15-20 minutes, stirring occasionally.
Add in the cheese tortellini and cook according to package directions.
Once the tortellini has cooked through, turn off the heat and stir in heavy whipping cream.
Notes
Serve this soup with parmesan cheese on top.
Use the 9 ounce tortellini or 20 ounce tortellini package, depending on how much you want in the soup.
If you want to add more vegetables, try: celery, carrots, and spinach.
Be careful not to overcook the tortellini. Check on it often once you add it to the pot.