Make this rich and satisfying one-pot soup featuring Italian sausage and cheese tortellini. It cooks quickly on the stovetop for a perfect weeknight meal.
Heat the olive oil in a large pot or Dutch oven over medium heat. Add the Italian sausage and cook, breaking it up with a spoon, until browned. Drain off excess grease.
Add the chopped onion to the pot and cook until softened, about 5 minutes.
Stir in the minced garlic and cook for 1 minute until fragrant.
Pour in the chicken broth and add the diced tomatoes (with juice), Italian seasoning, basil, and red pepper flakes if using. Bring the mixture to a simmer.
Add the refrigerated tortellini to the simmering broth. Cook according to package directions, usually 5 to 7 minutes, until the tortellini are tender.
Reduce the heat to low. Stir in the heavy cream and grated Parmesan cheese until the cheese melts and the soup is creamy. Do not let the soup boil after adding the cream.
Season with salt and pepper to your taste.
Ladle the soup into bowls and garnish with fresh parsley before serving.
Notes
For a thicker soup, you can stir in 1 tablespoon of cornstarch mixed with 2 tablespoons of cold water during the last 5 minutes of cooking.
Use sweet or hot Italian sausage depending on your preference for spice.
If you do not have refrigerated tortellini, use frozen, but adjust the cooking time as needed.