Making Chicken and Spinach Casserole with Cream Cheese is easy when you follow these steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Sauté Spinach: In a medium skillet, heat olive oil over medium heat. Add the chopped spinach and sauté until wilted, about 3-4 minutes.
3. Prepare Casserole Base: In a large bowl, combine the softened cream cheese, sour cream, garlic powder, onion powder, black pepper, and salt. Mix until smooth.
4. Add Chicken and Spinach: Stir in the shredded chicken and sautéed spinach into the cream cheese mixture.
5. Mix in Cheese: Fold in the shredded mozzarella and half of the Parmesan cheese until well combined.
6. Transfer to Casserole Dish: Pour the mixture into a greased 9×13-inch casserole dish, spreading it evenly.
7. Top with Breadcrumbs (optional): If desired, sprinkle breadcrumbs and the remaining Parmesan cheese evenly over the top.
8. Bake: Place in the preheated oven and bake for 35-40 minutes or until the casserole is heated through and the top is golden brown.
9. Cool: Allow the casserole to cool for 10-15 minutes before serving.

Following these steps will result in a deliciously creamy and flavorful Chicken and Spinach Casserole that your family will love!