In a large skillet over medium heat, brown sausage until golden.
Add onion, garlic and bell pepper and cook until soft, 5 minutes.
Add shells and stir until coated in sausage and peppers, then pour over marinara and chicken broth. Simmer until shells are al dente and almost all of the liquid is absorbed, 20 minutes.
Stir in half-and-half and mozzarella. Garnish with parsley and serve.
Recipe by Cooking TV Recipes at https://cookingtv-channel.com/italian-mac-cheese/