01 - 
                Heat olive oil in a large, heavy-bottomed skillet over medium heat. Add crumbled Italian sausage and cook until fully browned. Drain excess fat.
              
              
              
                02 - 
                Stir in minced garlic and Italian seasoning into the cooked sausage, sauté briefly until fragrant.
              
              
              
                03 - 
                Add uncooked rigatoni directly to the pan with sausage and seasonings, stirring to combine.
              
              
              
                04 - 
                Pour in chicken broth, heavy cream, and tomato sauce. Mix thoroughly to combine all ingredients.
              
              
              
                05 - 
                Bring mixture to a boil, then cover and reduce heat. Simmer for 10–15 minutes until pasta is al dente and sauce has thickened.
              
              
              
                06 - 
                Stir in fresh spinach and cook over low heat until wilted to desired tenderness.
              
              
              
                07 - 
                Adjust seasoning with salt, pepper, and optional red pepper flakes. Stir to combine and serve immediately.