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Chicken Cordon Bleu Casserole

Incredibly Easy Chicken Cordon Bleu Casserole in Just 6 Steps

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A delightful Chicken Cordon Bleu Casserole that’s both easy to prepare and delicious. Perfect for any family meal.

  • Total Time: 60 Minutes
  • Yield: 8 Servings (1 casserole dish) 1x

Ingredients

Scale
  • 5 cups shredded chicken
  • 9 ounces sliced deli-style black forest ham, cut into strips (about 9 slices)
  • 8 ounces sliced Swiss cheese (about 12 thin slices)
  • 6 Tablespoons unsalted butter
  • 1 Tablespoon Dijon mustard
  • 1 Tablespoon freshly squeezed lemon juice (optional)
  • 1 teaspoon garlic powder
  • ½ teaspoon salt
  • ¼ teaspoon nutmeg (optional)
  • ¼ teaspoon cayenne pepper (optional)
  • 6 Tablespoons all-purpose flour
  • 3 cups whole milk
  • 1 ½ cups Panko breadcrumbs
  • 4 Tablespoons unsalted butter, softened to room temperature
  • Chopped parsley (optional)

Instructions

  1. Preheat the oven to 350°F and spray a 9×13-inch casserole dish with nonstick cooking spray.
  2. Evenly spread 5 cups shredded chicken into the baking dish.
  3. Evenly layer 9 ounces sliced deli-style black forest ham, cut into strips over the chicken.
  4. Place 8 ounces sliced Swiss cheese evenly over the ham, overlapping the cheese slices to fit into the casserole dish.
  5. 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).
  6. Sprinkle in 6 Tablespoons all-purpose flour and continue whisking over medium heat until it forms a paste.
  7. 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.
  8. Once all the milk has been added, allow it to simmer for 4 minutes or until the sauce has thickened (whisking occasionally).
  9. 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

  • Nutmeg and cayenne pepper are optional but add extra flavor.
  • Fresh lemon juice enhances the sauce but can be skipped.
  • Let the casserole rest for 5 minutes before serving for better texture.
  • Author: Lisa
  • Prep Time: 20 Minutes
  • Cook Time: 40 Minutes
  • Category: Dinners
  • Method: Baking
  • Cuisine: American
  • Diet: Low Lactose

Nutrition

  • Serving Size: 1 serving
  • Calories: 420
  • Sugar: 4g
  • Sodium: 720mg
  • Fat: 24g
  • Saturated Fat: 12g
  • Unsaturated Fat: 9g
  • Trans Fat: 0g
  • Carbohydrates: 22g
  • Fiber: 1g
  • Protein: 30g
  • Cholesterol: 95mg