Chicken Cordon Bleu Casserole (Print Version)

Layers of chicken, ham, and Swiss cheese baked under a golden breadcrumb topping. Simple, rich, and family-friendly.

# Ingredients:

→ Main 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)

→ Sauce Ingredients

04 - 6 Tablespoons unsalted butter
05 - 1 Tablespoon Dijon mustard
06 - 1 Tablespoon freshly squeezed lemon juice (optional)
07 - 1 teaspoon garlic powder
08 - 1/2 teaspoon salt
09 - 1/4 teaspoon nutmeg (optional)
10 - 1/4 teaspoon cayenne pepper (optional)
11 - 6 Tablespoons all-purpose flour
12 - 3 cups whole milk

→ Topping Ingredients

13 - 1 1/2 cups Panko breadcrumbs
14 - 4 Tablespoons unsalted butter, softened to room temperature
15 - Chopped parsley (optional)

# Steps:

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 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 smooth before adding more milk.
08 - Allow the sauce to simmer for 4 minutes or until thickened, whisking occasionally.
09 - Pour the sauce over the cheese layer and spread it evenly, ensuring all corners are covered.
10 - Combine 1 1/2 cups Panko breadcrumbs and 4 Tablespoons softened unsalted butter in a small bowl, then spread this mixture evenly over the casserole dish as the final layer.
11 - Bake uncovered in the oven for 30-40 minutes, or until the sauce is bubbling and the Panko topping is golden brown.
12 - Remove the casserole from the oven and let it sit for 5 minutes for the sauce to set. Sprinkle with chopped parsley (optional) and serve.

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