Grease a 9x13 baking dish with cooking spray and preheat the oven to 350 F.
In a salted pot of water boil the noodles to just shy of al dente. Do not overcook the noodles.
Drain the water, reserving 1/2 cup of the pasta water.
In a large pot or tall rimmed large skillet, melt the butter over medium heat. Add the onion and mushrooms and sauté until soft, about 4-6 minutes. Add the garlic and flour and cook for an additional 3 minutes.
Slowly, while whisking add the broth followed by the milk and cream. Add the cream cheese, Italian seasoning, salt, garlic powder, and pepper and cook until it reaches a simmer. Reduce the heat to medium-low to keep a simmer. Simmer until thickened, about 4-6 minutes. If your sauce is too thick you can add 2 tablespoons of the pasta water at a time to get your desired consistency. Keep in mind it will thicken as it cools.
Add the chopped turkey, peas, Mozzarella, and Parmesan cheese and toss to combine. The cheese does not need to be melted fully. Add the pasta and toss.
Transfer to the prepared baking dish and top with the 1 cup Mozzarella cheese. Bake for about 10-15 minutes or until the cheese is totally melted.
Remove from the oven and let sit for 5-10 minutes before garnishing with fresh parsley and serving.
Notes
Storage: Store leftovers in an airtight container in the fridge for up to 3-4 days. This dish does not freeze well. Make-Ahead Instructions:You can make this ahead of time. Don’t top with cheese until right before you put it in the oven. Place in the fridge for up to 2 days before baking. Remove from the fridge while you preheat the oven. Bake for 20 to 25 minutes covered with foil before removing the foil and baking 10-15 minutes until cheese is melted and the sauce bubbling.
You can use any shape of pasta for this dish.
Bacon is a delicious addition to this dish.
Swap chicken for the turkey.
Swap broccoli for peas.
Do not overcook the pasta or it will be soggy when you bake this.
If you use an oven safe skillet or pot you can cook this directly in it instead of transferring to a baking dish.