Sausage Gnocchi Soup

Name: Sausage Gnocchi Soup
Prep time: 20 min
Cook time: 20 min
Total time: 40 min
Cuisine: Italian
Ingredients: 1 lb mild Italian sausage, casings removed; 1/2 yellow onion, diced; 1 carrot, diced; 1 celery stalk, diced; 1 red bell pepper, diced; 4 cloves garlic, minced; 1.5 tbsp Italian seasoning; 1 14oz can fire-roasted tomatoes*; 1 8oz can pure tomato sauce; 6 cups vegetable stock (or chicken); 1 cup water; 1 lb potato gnocchi; 2 cups spinach; freshly shaved parmesan, croutons for serving