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Chicken Cordon Bleu Casserole

Tender chicken, ham, and Swiss cheese baked in a creamy sauce with golden breadcrumb topping - all the flavors of classic Cordon Bleu in an easy casserole form.
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Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings: 8 servings
Course: Dinner, Main Dish
Cuisine: American, French-inspired
Calories: 485
Ingredients Equipment Method Notes

Ingredients
  

Casserole Base
  • 2 pounds boneless skinless chicken breasts cut into bite-sized pieces
  • 8 ounces deli ham thinly sliced and chopped
  • 8 ounces Swiss cheese shredded
  • 2 cups fresh broccoli florets
  • 3 tablespoons butter
  • 3 tablespoons all-purpose flour
  • 2 cups heavy cream
  • 1 cup chicken broth
  • 1 teaspoon Dijon mustard
  • 1 teaspoon garlic powder
  • 1 teaspoon dried thyme
  • salt and pepper to taste
Breadcrumb Topping
  • 1 cup panko breadcrumbs
  • 0.5 cup grated Parmesan cheese
  • 3 tablespoons butter melted
  • 2 tablespoons fresh parsley chopped
  • 0.5 teaspoon paprika

Equipment

  • 9x13 inch baking dish
  • Large skillet
  • Mixing bowls
  • Whisk

Method
 

  1. Preheat oven to 375°F (190°C) and grease a 9x13-inch baking dish.
  2. Season chicken pieces with salt and pepper. Sear in a large skillet until golden brown and cooked through, about 6-8 minutes. Transfer to baking dish.
  3. Steam broccoli florets until tender-crisp, about 3-4 minutes. Drain and scatter over chicken.
  4. Layer chopped ham over chicken and broccoli, then sprinkle Swiss cheese evenly over the surface.
  5. In the same skillet, melt 3 tablespoons butter. Whisk in flour and cook for 1-2 minutes to create a roux.
  6. Gradually whisk in cream and chicken broth. Add Dijon mustard, garlic powder, thyme, salt, and pepper.
  7. Cook until sauce thickens enough to coat a spoon, 5-7 minutes. Pour evenly over casserole.
  8. Mix panko breadcrumbs, Parmesan cheese, melted butter, parsley, and paprika. Sprinkle over casserole.
  9. Bake for 25-30 minutes until top is golden brown and sauce bubbles around edges.
  10. Let rest 5-10 minutes before serving. Garnish with additional parsley if desired.

Notes

For extra flavor, add mushrooms or asparagus to the vegetable layer. Can be assembled ahead of time and refrigerated before baking. Add 10 minutes to cooking time if baking from cold.