Chicken Cordon Bleu Casserole

Chicken Cordon Bleu Casserole

15 min

Chicken cordon bleu casserole is packed with tender boneless, skinless chicken breasts and a full pound of Swiss cheese.

Ingredients

  • Cooking spray
  • 3 oz. prosciutto
  • 6 tbsp. unsalted butter
  • 6 tbsp. all-purpose flour
  • 1 c. chicken broth
  • 1 c. whole milk
  • 1 tbsp. Dijon mustard
  • 1 1/2 tsp. kosher salt
  • 1 tsp. freshly ground black pepper
  • 2 lb. boneless, skinless chicken breasts, cut into 1" pieces
  • 8 oz. cubed ham
  • 4 c. shredded Swiss cheese (about 1 lb.), divided
  • 1 panko bread crumbs
  • Chopped fresh parsley, for serving

Directions

  1. 1

    Preheat oven to 350°. Coat a 13"-by-9" baking dish and a rimmed baking sheet with cooking spray.

  2. 2

    Arrange prosciutto on prepared baking sheet in an even layer with no overlap. Bake until crispy, 10 to 15 minutes. Let cool (they will continue to crisp while cooling).

  3. 3

    Meanwhile, in a large saucepan over medium heat, melt butter. Whisk in flour and let bubble until light golden brown and toasted, about 2 minutes. Pour in broth and milk and simmer, whisking occasionally, until thickened, 4 to 6 minutes. Whisk in mustard, salt, and pepper.

  4. 4

    Stir chicken and ham into sauce. Simmer, stirring occasionally, until chicken is cooked through, 9 to 11 minutes. Stir in 2 cups cheese and immediately transfer mixture to prepared baking dish. Top with remaining 2 cups cheese.

  5. 5

    Place cooled prosciutto in a small bowl. Using the handle of a wooden spoon, crush into fine crumbs. Add panko and toss to combine. Sprinkle prosciutto mixture evenly over baking dish.

  6. 6

    Bake until filling is bubbling and crumbs are golden brown, 30 to 35 minutes. Top with parsley and serve.