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A close-up shot of a freshly baked Chicken Cordon Bleu Casserole in a white ceramic dish. The topping of melted Swiss cheese and golden breadcrumbs is visible.

The Ultimate Chicken Cordon Bleu Casserole: A Weeknight Masterpiece

This easy Chicken Cordon Bleu Casserole recipe transforms the French classic into a weeknight favorite. Featuring shredded chicken, diced ham, and a velvety cream sauce under a bubbly Swiss cheese and crispy Panko crust.
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Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 8 servings
Course: Dinner, Main Course
Cuisine: American, French
Calories: 520
Ingredients Equipment Method Notes

Ingredients
  

  • 3 cups shredded cooked chicken about 450g
  • 1.5 cups diced ham about 225g
  • 2 cups shredded Swiss cheese about 224g, divided
  • 0.25 cup unsalted butter 57g
  • 0.25 cup all-purpose flour 30g
  • 2 cups whole milk 480ml
  • 1 cup low-sodium chicken broth 240ml
  • 2 tbsp Dijon mustard 30g
  • 0.5 tsp garlic powder
  • 0.5 tsp salt
  • 0.25 tsp black pepper
  • 1 cup Panko breadcrumbs 100g
  • 0.25 cup unsalted butter, melted 57g
  • 2 tbsp fresh parsley, finely chopped for garnish

Equipment

  • 1 9x13 inch Baking Dish
  • 1 Large Saucepan

Method
 

  1. Preheat oven to 375°F (190°C). Grease a 9x13 inch baking dish. In a small bowl, combine Panko breadcrumbs with ¼ cup melted butter and toss to coat. Set aside.
  2. In a saucepan over medium heat, melt ¼ cup of butter. Whisk in the flour and cook for 1 minute. Gradually whisk in the milk and chicken broth. Cook, stirring, until the sauce thickens, about 5-7 minutes.
  3. Remove from heat. Stir in Dijon mustard, garlic powder, salt, and pepper. Add 1 cup of the shredded Swiss cheese and stir until melted and smooth.
  4. In a large bowl, combine the shredded chicken and diced ham. Pour the cheese sauce over and mix to combine. Transfer the mixture to the prepared baking dish.
  5. Top with the remaining 1 cup of Swiss cheese, followed by the buttered Panko breadcrumbs. Bake for 20-25 minutes, until bubbly and the top is golden-brown.
  6. Let the casserole rest for 5-10 minutes before serving. Garnish with freshly chopped parsley.

Notes

Shred your own cheese for the best melting results.
Don't skip the resting period, as it helps the casserole set.
Using a rotisserie chicken is a great time-saver for this recipe.