Preheat a deep heavy pot over medium heat. Add in the Italian sausage and cook it until it turns a light shade of brown.
Add in the diced onion and cook for about 5 minutes until softened. Add pressed garlic and season with 1 tsp salt or to taste.
Add chicken broth and tomato sauce. Simmer for 15 minutes.
Stir in the tortellini and simmer for about 5 minutes. You may need to adjust the cooking time depending on the size of your tortellini.
Stir in the chopped kale and heavy cream. Bring to a simmer and cook for another 2-3 minutes or until kale is tender. Remove the heat and serve.
