Creating the Creamy Turkey Pasta Bake is straightforward. Follow these simple steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Cook Pasta: In a large pot, cook the penne pasta according to package directions until al dente. Drain and set aside.
3. Cook Turkey: In a large skillet, heat olive oil over medium heat. Add the ground turkey and cook until browned, about 5-7 minutes.
4. Add Vegetables: Stir in the chopped onion, minced garlic, and sliced mushrooms. Cook until softened, about 5 minutes.
5. Season: Mix in Italian seasoning, salt, and pepper. Stir until well combined.
6. Add Liquids: Pour in the chicken broth and heavy cream. Stir to combine, then bring to a simmer.
7. Cheese It Up: Add half of the Parmesan cheese and stir until melted and smooth.
8. Combine Pasta: Add the cooked pasta to the skillet, stirring until well coated in the sauce.
9. Transfer to Baking Dish: Pour the creamy turkey pasta mixture into a greased 9×13-inch baking dish.
10. Top with Cheese: Sprinkle the remaining Parmesan and mozzarella cheese evenly over the top.
11. Bake: Place in the preheated oven and bake for 20-25 minutes, or until bubbly and golden on top.
12. Garnish: Remove from the oven and let it cool for a few minutes. Garnish with fresh parsley if desired.

These steps will guide you in creating this incredible bake effortlessly.