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Chicken Cordon Bleu Casserole

A baking dish with chicken casserole

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If you like chicken cordon bleu, you should try this casserole version! Made with ham, chicken, Swiss and Parmesan cheeses, and a buttery breadcrumb topping.

Ingredients

Scale
  • 2 tablespoons butter
  • 2 tablespoons flour
  • 1 teaspoon Dijon mustard
  • 1 cup whole milk
  • 3/4 cup (3 ounces) Swiss cheese, or Gruyère cheese
  • 3 tablespoons grated Parmesan cheese, divided
  • 1 teaspoon lemon juice
  • Salt and pepper, to taste
  • 1 cup diced ham
  • 3 cups chopped chicken
  • 1 cup fresh breadcrumbs, or panko
  • 2 tablespoons melted butter

Instructions

  1. Heat the oven to 350 F and grease a 1 1/2-quart casserole.
  2. Melt 2 tablespoons of butter in a saucepan over medium heat. Add the flour and mustard and cook, stirring, for 2 minutes.
  3. Gradually add the milk, whisking and cooking until the mixture begins to thicken.
  4. Stir in the Swiss or Gruyère cheese and 2 tablespoons of Parmesan cheese; stir until melted. Add the lemon juice; taste and season the sauce with salt and pepper.
  5. Arrange the chicken and ham in the bottom of the casserole.
    chcken and ham in the baking dish
  6. Pour the sauce over the meat.
  7. Combine the breadcrumbs with 2 tablespoons of melted butter and the remaining 1 tablespoon of grated Parmesan. Sprinkle over the casserole.
  8. Bake uncovered for 25 to 35 minutes, until the topping is browned and the casserole is bubbling.
  9. Remove the casserole to a rack and let stand for 5 minutes before serving.
    whole baked chicken cordon bleu casserole