Creating Chicken Cordon Bleu Casserole is simple. Follow these steps for best results:

1. Preheat the Oven: Begin by preheating your oven to 350°F (175°C).
2. Prepare the Pan: Lightly grease a 9×13-inch casserole dish to prevent sticking.
3. Mix Chicken and Ham: In a large bowl, combine the cooked and shredded chicken with the diced ham.
4. Add Cheese: Fold in 1½ cups of the shredded Swiss cheese into the chicken and ham mixture.
5. Make the Cream Sauce: In another bowl, mix together the sour cream, mayonnaise, chicken broth, Dijon mustard, garlic powder, onion powder, black pepper, and paprika.
6. Combine Mixtures: Pour the cream sauce over the chicken, ham, and cheese mixture. Stir until everything is well coated.
7. Layer the Casserole: Transfer the mixture to the prepared casserole dish, spreading it evenly.
8. Top with Crackers: Sprinkle the remaining crushed crackers over the top of the casserole for a crunchy topping.
9. Add Cheese: Finish by adding the remaining shredded Swiss cheese on top of the crackers.
10. Bake: Place the casserole in the preheated oven and bake for 40-45 minutes, or until the top is golden and bubbly.
11. Cool and Serve: Once baked, allow the casserole to cool for a few minutes before serving.

This wonderfully simple process will guide you in creating an amazing Chicken Cordon Bleu Casserole that everyone will adore.