Creating this Chicken Cordon Bleu Casserole is easy and enjoyable. Follow these simple steps for a delicious result:

1. Preheat your oven to 350°F (175°C).
2. In a large bowl, combine the shredded chicken, diced ham, and 1 cup of the shredded Swiss cheese. Set aside.
3. In another bowl, mix together the cream of chicken soup and milk until well blended.
4. Fold the soup mixture into the chicken and ham mixture, ensuring all ingredients are coated.
5. Season with garlic powder, onion powder, salt, and pepper to taste.
6. Grease a 9×13 inch casserole dish with cooking spray or butter.
7. Pour the chicken mixture into the prepared dish, spreading it evenly.
8. In a separate bowl, combine the breadcrumbs with melted butter and mix well.
9. Sprinkle the breadcrumb mixture evenly over the casserole.
10. Top with the remaining 1 cup of Swiss cheese, spreading it out to cover the breadcrumbs.
11. Bake in the preheated oven for 30-35 minutes, or until the cheese is bubbly and the casserole is heated through.
12. Remove from the oven and let it cool for a few minutes before serving.
13. Garnish with fresh parsley if desired.

This step-by-step guide will help you breeze through the cooking process, resulting in a fantastic Chicken Cordon Bleu Casserole that impresses everyone at the table.