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Creamy Chicken Cordon Bleu Casserole

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This creamy chicken cordon bleu casserole combines savory chicken, smoked ham, and gooey Swiss cheese in a rich, tangy sauce, all topped with a golden, crunchy breadcrumb crust. It’s an easy, comforting family dinner perfect for busy weeknights or special occasions.

Ingredients

Scale
  • 3 cups cooked chicken, shredded or chopped
  • 1 1/2 cups diced ham
  • 8 ounces Swiss cheese, shredded
  • 1 cup mozzarella cheese, shredded
  • 4 tablespoons unsalted butter, softened
  • 1/4 cup all-purpose flour
  • 2 cups whole milk
  • 1 cup chicken broth
  • 1 tablespoon Dijon mustard
  • 1/2 teaspoon garlic powder
  • 1/2 teaspoon onion powder
  • Salt & pepper to taste
  • 1 cup Panko breadcrumbs
  • 2 tablespoons melted butter
  • 2 tablespoons grated Parmesan cheese (optional)
  • Chopped parsley for garnish (optional)

Instructions

  1. Preheat your oven to 375°F (190°C). Grease a 9×13-inch casserole dish with butter or nonstick spray. Shred chicken and cheese, dice ham if not already done.
  2. In a medium saucepan over medium heat, melt 4 tablespoons unsalted butter. Whisk in 1/4 cup flour and cook for 1-2 minutes until bubbly and pale golden. Gradually whisk in 2 cups whole milk and 1 cup chicken broth, pouring slowly and whisking to avoid lumps. Add Dijon mustard, garlic powder, onion powder, and salt and pepper. Simmer for 3-4 minutes until thickened and smooth.
  3. In a large mixing bowl, combine cooked chicken, diced ham, Swiss cheese, and mozzarella cheese. Pour about half the creamy sauce over the mixture and toss gently to combine. Pour into the prepared casserole dish and spread evenly. Pour the rest of the sauce over the top and smooth with a spatula.
  4. In a small bowl, mix Panko breadcrumbs with melted butter and Parmesan cheese, if using. Sprinkle evenly over the casserole.
  5. Bake uncovered for 25-30 minutes until the topping is golden brown and the sauce is bubbling at the edges. If the topping browns too quickly, loosely cover with foil for the last 10 minutes.
  6. Remove from oven and let sit for 5 minutes. Sprinkle with chopped parsley if desired. Serve hot.

Notes

For gluten-free, use gluten-free flour and breadcrumbs. Rotisserie chicken saves time and adds flavor. Mix half the sauce with the filling for extra moisture. Watch the topping as it can brown quickly; cover with foil if needed. Add spinach or broccoli for extra nutrition. Leftovers reheat well and can be frozen for up to 2 months.

Nutrition

Keywords: chicken cordon bleu casserole, creamy chicken casserole, easy family dinner, weeknight casserole, comfort food, ham and cheese casserole, rotisserie chicken recipe

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