Creating the Chicken and Spinach Casserole with Cream Cheese can be effortless if you follow these simple steps:

1. Preheat your oven to 350°F (175°C).
2. Prepare the Chicken: If not already done, cook and shred your chicken. This can be done ahead of time or using leftover chicken.
3. Cook the Spinach: In a pan over medium heat, cook the chopped spinach for 2-3 minutes until wilted. Remove from heat and set aside.
4. Combine Cream Mixture: In a large bowl, mix together the softened cream cheese, sour cream, garlic powder, onion powder, salt, and pepper until well combined.
5. Stir in Chicken and Spinach: Add the shredded chicken, cooked spinach, and half of the mozzarella cheese to the cream mixture. If using, add the cooked rice now.
6. Transfer to Baking Dish: Pour the chicken and spinach mixture into a greased casserole dish, spreading it evenly.
7. Top with Cheeses: Sprinkle the remaining mozzarella cheese and Parmesan cheese evenly on top of the mixture.
8. Breadcrumbs for Crunch: Add breadcrumbs on top for an extra crunchy texture.
9. Bake: Place the casserole in the preheated oven and bake for 25-30 minutes, or until hot and bubbly.
10. Cool and Serve: Remove from the oven and let it cool for a few minutes before serving.

Following these steps will lead you to create a satisfying and delicious Chicken and Spinach Casserole with Cream Cheese that is sure to delight your family and friends.