Recipes for Italian sausage soup are found on several websites, including AllRecipes.com, MyRecipes.com and Food Network. Reviewers rate all three recipes with five stars. Ingredients combine 1/2 to 1 pound Italian sausage and a variety of vegetables such as butternut squash, zucchini, spinach and carrots.
MyRecipes.com adds pasta, while AllRecipes.com calls for beans. The Food Network soup is pureed with butternut squash and cream.
The Food Network recipe starts with preparing the butternut squash by cutting it in half and baking for 45 minutes, then browning the sausage. The other two recipes begin with browning the sausage. Next, stir in garlic, spices, broth, tomatoes, onions, squash, carrots or pasta, depending on the recipe. Bring the mixture to a boil. Turn down the heat, and simmer for 10 to 30 minutes. Add spinach to the MyRecipes.com soup, then sprinkle with cheese and basil before serving.
Add zucchini and beans to the AllRecipes.com soup, then cover and simmer for another 15 minutes. Add spinach, and serve after five minutes.
Use a food processor or immersion blender to puree the soup for the Food Network recipe. Strain the soup, then stir in cider vinegar. Add the cream. Saute sage leaves in butter until they are crisp, and serve these as a garnish for the soup.