Creamy Tortellini Soup

Name: Creamy Tortellini Soup
Prep time: 15 min
Cook time: 15 min
Total time: 30 min
Cuisine: European, Italian, Mediterranean
Ingredients: 1 tablespoon olive oil; 1 pound Italian sausage (casing removed); 3 cloves garlic (minced); 1 medium sweet onion (diced); 2 teaspoons Italian seasoning; Kosher salt and freshly ground black pepper (to taste); 2 tablespoons all-purpose flour; 4 cups chicken stock; 1 (8-ounce) can tomato sauce; 1 (9-ounce) package refrigerated three cheese tortellini; 1/2 bunch kale (stems removed and leaves chopped); 1/3 cup heavy cream; 3 tablespoons chopped fresh basil