Prepare pouch meal according to package instructions. Use two cups water or beef broth, if desired.
Saute the sliced mushrooms in one tablespoon butter. Cook until they are tender, about 5-7 minutes.
Add the Parmesan cheese to the hot rotini mixture and stir until it is melted and combined. You may need to add additional water or broth to maintain a consistency desired of a pasta dish.
Add the sauteed mushrooms, cooked and chopped up bacon, coarsely chopped baby spinach, and the remaining tablespoon of butter.
Transfer the mixture to a small, greased baking dish. Top with a little Parmesan or mozzarella cheese. Bake at 375℉ for 10 to 15 minutes or until the cheese topping is melted.
Drizzle the finished, baked dish with truffle oil, if desired.
