Making Chicken Cordon Bleu Casserole is simple and rewarding if you follow these clear steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C) to prepare for baking.
2. Prepare Chicken: In a large bowl, combine the diced chicken breasts, diced ham, and 1 cup of shredded Swiss cheese. Mix well.
3. Make Sauce: In another bowl, whisk together the cream of chicken soup, sour cream, milk, garlic powder, onion powder, paprika, Dijon mustard, salt, and pepper until smooth.
4. Combine Ingredients: Pour the sauce over the chicken and ham mixture. Stir thoroughly to coat everything evenly.
5. Transfer to Baking Dish: Pour the combined mixture into a greased 9×13 inch baking dish and spread it out evenly.
6. Add Topping: In a separate bowl, mix the crushed buttery crackers with melted butter. Sprinkle the mixture over the casserole.
7. Top with Cheese: Add the remaining 1 cup of shredded Swiss cheese on top of the cracker layer for extra flavor.
8. Bake: Place the baking dish in the preheated oven and bake for 30-35 minutes, or until bubbly and golden brown.
9. Cool Slightly: Once baked, remove the casserole from the oven and let it sit for 5-10 minutes to set.
10. Garnish: If desired, sprinkle chopped parsley over the top for a fresh finish.

These easy-to-follow steps will guide you in creating a comforting Chicken Cordon Bleu Casserole that is sure to impress!