Preparing Baked Cream Cheese Spaghetti Casserole is simple and straightforward. Follow these steps to create this delicious dish:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Cook Spaghetti: In a large pot, boil water and cook the spaghetti according to package instructions until al dente. Drain and set aside.
3. Mix Cream Cheese: In a large mixing bowl, combine the softened cream cheese, Parmesan cheese, garlic powder, Italian seasoning, salt, and black pepper. Mix until well blended.
4. Combine Spaghetti: Add the cooked spaghetti to the cream cheese mixture. Toss until the spaghetti is evenly coated.
5. Add Marinara Sauce: Pour in the marinara sauce and mix until everything is well combined.
6. Transfer to Casserole Dish: Spread the spaghetti mixture into a greased 9×13-inch casserole dish.
7. Top with Cheese: Sprinkle the shredded mozzarella cheese evenly over the top of the casserole.
8. Bake: Place the casserole in the preheated oven and bake for 30-35 minutes, or until the cheese is melted and bubbly.
9. Garnish: Once done, remove from the oven and let it cool for a few minutes. Garnish with freshly chopped parsley if desired.
10. Serve: Slice and serve warm, enjoying the creamy goodness of this delightful dish.

These steps ensure that your Baked Cream Cheese Spaghetti Casserole turns out perfectly every time!