Chicken Cordon Bleu (Print Version)

Ingredients:

01 - 5 cups shredded chicken.
02 - 9 ounces sliced deli-style black forest ham, cut into strips (about 9 slices).
03 - 8 ounces sliced Swiss cheese (about 12 thin slices).
04 - 6 Tablespoons unsalted butter.
05 - 1 Tablespoon Dijon mustard.
06 - 1 Tablespoon freshly squeezed lemon juice (optional).
07 - 1 teaspoon garlic powder.
08 - ½ teaspoon salt.
09 - ¼ teaspoon nutmeg (optional).
10 - ¼ teaspoon cayenne pepper (optional).
11 - 6 Tablespoons all-purpose flour.
12 - 3 cups whole milk.
13 - 1 ½ cups Panko breadcrumbs.
14 - 4 Tablespoons unsalted butter, softened to room temperature.
15 - Chopped parsley (optional).

Instructions:

01 - Preheat the oven to 350°F and spray a 9x13-inch casserole dish with nonstick cooking spray.
02 - Evenly spread 5 cups shredded chicken into the baking dish.
03 - Evenly layer 9 ounces sliced deli-style black forest ham, cut into strips over the chicken.
04 - Place 8 ounces sliced Swiss cheese evenly over the ham, overlapping the cheese slices to fit into the casserole dish.
05 - Melt 6 Tablespoons unsalted butter in a saucepan over medium heat. Whisk in 1 Tablespoon Dijon mustard, 1 Tablespoon freshly squeezed lemon juice (if using), 1 teaspoon garlic powder, 1/2 teaspoon salt, 1/4 teaspoon nutmeg (if using), and 1/4 teaspoon cayenne pepper (if using).
06 - Sprinkle in 6 Tablespoons all-purpose flour and continue whisking over medium heat until it forms a paste.
07 - Slowly add 3 cups whole milk, a quarter of a cup at a time, whisking after each addition until the mixture is smooth, before adding the next bit of milk.
08 - Once all the milk has been added, allow it to simmer for 4 minutes or until the sauce has thickened (whisking occasionally).
09 - Pour the sauce over the cheese layer and spread it evenly around as best as possible, making sure to get in all the corners.
10 - Combine the 1 ½ cups Panko breadcrumbs and 4 Tablespoons unsalted butter, softened to room temperature in a small bowl and spread this mixture evenly over the casserole dish as your final layer.
11 - Bake in the oven uncovered for 30-40 minutes, or until the sauce is bubbling and the Panko topping is golden brown.
12 - Remove the casserole dish from the oven and let it sit for 5 minutes to allow the sauce to set. Sprinkle with chopped parsley (optional) and serve.

Notes:

01 - Ensure the Panko topping is golden brown for added crunch.
02 - Letting the casserole sit for a few minutes before serving helps the sauce set.