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Chicken Cordon Bleu Casserole

A delicious and comforting casserole combining chicken, ham, and Swiss cheese in a creamy sauce, perfect for family meals or gatherings.
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Prep Time 15 minutes
Cook Time 35 minutes
Total Time 50 minutes
Servings: 8 servings
Course: Dinner, Main Course
Cuisine: American
Calories: 350
Ingredients Method Notes

Ingredients
  

Main Ingredients
  • 5 cups shredded chicken Use rotisserie chicken for easier preparation.
  • 9 ounces sliced deli-style black forest ham, cut into strips
  • 8 ounces sliced Swiss cheese Can be substituted with different cheeses if desired.
For the Sauce
  • 6 tablespoons unsalted butter Split into two portions: 6 tablespoons for cooking and 4 tablespoons for topping.
  • 1 tablespoon Dijon mustard
  • 1 tablespoon freshly squeezed lemon juice (optional)
  • 1 teaspoon garlic powder
  • 1/2 teaspoon salt
  • 1/4 teaspoon nutmeg (optional)
  • 1/4 teaspoon cayenne pepper (optional) Add more for spiciness.
  • 6 tablespoons all-purpose flour
  • 3 cups whole milk
Topping
  • 1 1/2 cups Panko breadcrumbs Contributes to a crispy topping.
  • 4 tablespoons unsalted butter, softened to room temperature Mix with Panko before sprinkling.
Garnish (optional)
  • Chopped parsley For serving garnish.

Method
 

Preparation
  1. Preheat your oven to 375°F (190°C).
  2. In a large mixing bowl, combine shredded chicken, ham, and Swiss cheese. Set aside.
Make the Sauce
  1. In a saucepan over medium heat, melt 6 tablespoons of unsalted butter.
  2. Stir in the flour and cook for about 1-2 minutes.
  3. Gradually whisk in the milk, Dijon mustard, lemon juice (if using), garlic powder, salt, nutmeg, and cayenne pepper. Cook until the mixture thickens.
Combine and Bake
  1. Pour the sauce over the chicken mixture and mix well to combine.
  2. Spread the mixture into a greased casserole dish.
  3. In a small bowl, mix Panko breadcrumbs with 4 tablespoons of softened butter, then sprinkle over the casserole.
  4. Bake for 30-35 minutes or until golden brown and bubbly.
Serving
  1. Garnish with chopped parsley, if desired, and serve hot.

Notes

For a crispy topping, broil for an additional 1-2 minutes at the end. Store leftover casserole in an airtight container in the refrigerator for up to 3-4 days. Reheat portions in the microwave or warm the whole casserole in the oven until heated through. You can prepare ahead of time and bake when ready to serve.