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A close-up spoonful of creamy chicken cordon bleu bake, showing the layers of chicken, ham, and melted Swiss cheese.

Chicken Cordon Bleu Casserole (The Easiest, Creamiest Recipe!)

This Chicken Cordon Bleu Casserole transforms a classic dish into an easy weeknight meal. Tender chicken and ham are baked in a rich, creamy Dijon sauce and topped with crispy, golden Panko breadcrumbs for the ultimate comfort food.
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Prep Time 20 minutes
Cook Time 30 minutes
Total Time 50 minutes
Servings: 8 servings
Course: Dinner, Main Course
Cuisine: American, French
Calories: 550
Ingredients Equipment Method Notes

Ingredients
  

Casserole Base
  • 4 cups cooked chicken shredded or diced
  • 2 cups cooked ham diced
  • 2 cups Swiss cheese shredded, divided
Creamy Dijon Sauce
  • 4 tbsp butter
  • 1/4 cup all-purpose flour
  • 2 cups milk
  • 4 oz cream cheese softened
  • 3 tbsp Dijon mustard
  • 1 tsp garlic powder
  • 1/2 tsp onion powder
  • 1/2 tsp salt or to taste
  • 1/4 tsp black pepper or to taste
Crispy Topping
  • 1 cup Panko breadcrumbs
  • 1/4 cup butter melted
  • 1/4 cup Parmesan cheese grated

Equipment

  • 1 9x13 inch baking dish
  • 1 Medium Saucepan
  • 1 Whisk

Method
 

  1. Preheat your oven to 375°F (190°C). Lightly grease a 9x13 inch baking dish.
  2. Spread the cooked, shredded chicken evenly across the bottom of the prepared dish. Top with the diced ham. Sprinkle 1 cup of the shredded Swiss cheese over the ham.
  3. In a medium saucepan, melt 4 tbsp of butter over medium heat. Whisk in the flour and cook for one minute to form a roux.
  4. Gradually pour in the milk, whisking constantly. Cook until the sauce begins to thicken. Remove from heat. Stir in the cream cheese until smooth, then add the Dijon mustard, garlic powder, onion powder, salt, and pepper. Stir in the remaining 1 cup of Swiss cheese until melted.
  5. Pour the creamy sauce evenly over the chicken and ham in the baking dish.
  6. In a small bowl, combine the Panko breadcrumbs, 1/4 cup of melted butter, and Parmesan cheese. Mix until the breadcrumbs are evenly coated.
  7. Sprinkle the breadcrumb mixture evenly over the casserole. Bake for 25-30 minutes, or until the sauce is bubbly and the topping is golden brown and crispy. Let rest for 5-10 minutes before serving.

Notes

For the best flavor and texture, use freshly shredded Swiss cheese.
A rotisserie chicken is a great shortcut for the cooked chicken.
Let the casserole rest before serving to allow the sauce to set.