Heat a deep 12″ skillet or dutch oven over medium-high heat, and spray with cooking spray. Remove sausage from casing and brown and crumble until cooked through.
Stir in chicken broth, water, pasta, and tomatoes. Bring to a boil, and continue boiling for recommended cooking time for pasta.
Five minutes before pasta is done, stir in spinach one handful at a time until wilted.
Turn heat to low, and stir in parmesan cheese. Gently stir until cheese is melted and well combined. Serve and enjoy!
Recipe Notes
Sauce will thicken up a bit on standing, and it will be perfect for leftovers.
If you use 16 ounces of pasta, you may need to add an extra 1/4 cup of water. If you use 12 ounces, use 1/4 less.