Chicken Cordon Bleu Casserole

I’ve always adored the classic Chicken Cordon Bleu, but the process of stuffing, rolling, and pan-frying felt like a special occasion affair. I wanted those incredible flavors—savory ham, nutty Swiss, and tender chicken—in a dish I could make any night. This Chicken Cordon Bleu Casserole is my answer. It’s a warm, bubbly bake that fills the kitchen with the most amazing aroma, much like some of my other favorite rich, comforting dishes like these loaded scalloped potatoes. It’s pure comfort in every single bite.

What Makes This Chicken Cordon Bleu Casserole So Special?

This dish is my go-to because it delivers a gourmet experience with minimal effort. With just 20 minutes of prep and 30 minutes to bake, it’s a lifesaver on busy evenings. The magic is in the homemade creamy Dijon sauce, which beautifully coats the layers of chicken, ham, and melted Swiss cheese. This isn’t just another casserole; it’s my favorite Chicken Cordon Bleu Casserole, a truly special meal that feels both elegant and incredibly cozy.

The Key Ingredients You’ll Need

For this Chicken Cordon Bleu Casserole, I always insist on shredding Swiss cheese from a block for the best melt. A quality deli ham also makes a huge difference. If you enjoy this combination, you might also love my hearty chicken and potato casserole.

Sofia

Creamy Chicken Cordon Bleu Casserole

All the classic flavors of Chicken Cordon Bleu—tender chicken, savory ham, and melty Swiss cheese—transformed into a simple, creamy, and comforting weeknight casserole. A golden, crunchy panko topping makes it truly irresistible.

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Prep Time 20 minutes mins

Cook Time 30 minutes mins

Total Time 50 minutes mins

Servings: 6 servings

Course: Main Course

Cuisine: American

Calories: 625

Ingredients Equipment Method Notes

Ingredients

  

For the Casserole Base

• 4 cups cooked chicken shredded or cubed (about 1.5 lbs)
• 8 oz deli ham diced
• 2 cups shredded Swiss cheese divided

For the Creamy Dijon Sauce

• 4 tbsp unsalted butter
• 1/4 cup all-purpose flour
• 2 cups milk
• 1/2 cup chicken broth
• 2 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

For the Crunchy Topping

• 1 cup panko breadcrumbs
• 3 tbsp unsalted butter melted
• 1/4 cup grated Parmesan cheese
• 1 tbsp fresh parsley chopped

Equipment

• 9x13 inch baking dish
• Large Skillet
• Medium Saucepan
• Whisk
• Mixing Bowl

Method

 

Prepare

• Preheat oven to 375°F (190°C). Lightly grease a 9x13 inch baking dish.

Make the Creamy Dijon Sauce

• In a medium saucepan over medium heat, melt 4 tablespoons of butter. Whisk in the flour and cook for 1 minute, stirring constantly, to form a roux.
• Gradually whisk in the milk and chicken broth until smooth. Bring the mixture to a simmer, stirring frequently, until it begins to thicken (about 5-7 minutes).
• Remove the saucepan from the heat. Stir in the Dijon mustard, garlic powder, onion powder, salt, and pepper. Add 1 cup of the shredded Swiss cheese and stir until the cheese is completely melted and the sauce is smooth.

Assemble the Casserole

• In a large bowl, combine the cooked chicken and diced ham. Pour the creamy Dijon sauce over the chicken and ham mixture and stir gently to coat everything evenly.
• Transfer the mixture to the prepared baking dish and spread it into an even layer. Sprinkle the remaining 1 cup of shredded Swiss cheese over the top.

Add Topping and Bake

• In a small bowl, combine the panko breadcrumbs, 3 tablespoons of melted butter, grated Parmesan cheese, and chopped fresh parsley. Mix until the breadcrumbs are evenly moistened.
• Sprinkle the panko topping evenly over the casserole.
• Bake uncovered for 25-30 minutes, or until the casserole is hot and bubbly and the topping is golden brown and crisp.
• Let the casserole rest for 5-10 minutes before serving. This allows it to set up slightly, making it easier to serve.

Notes

Make-Ahead Tip: Assemble the casserole without the panko topping up to 1 day in advance. Cover and refrigerate. When ready to bake, add the topping and increase the baking time by 10-15 minutes, or until heated through.
Rotisserie Chicken Shortcut: To save time, use a store-bought rotisserie chicken. You'll need about 4 cups of shredded meat.
Storage: Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the microwave or in the oven at 350°F until warmed through.
Variations: For a heartier casserole, add 8 oz of cooked egg noodles or 2 cups of cooked white rice to the chicken mixture before adding the sauce.

How I Make Chicken Cordon Bleu Casserole

I start by layering the cooked chicken, ham, and Swiss cheese in a baking dish. Then, I whip up the creamy Dijon sauce on the stovetop—it’s a simple mix of butter, flour, milk, and broth, seasoned perfectly. I pour that velvety sauce over the layers, ensuring every piece is coated. The final touch is a generous sprinkle of a panko and Parmesan mixture. It bakes into the most wonderfully golden, crispy topping for my Chicken Cordon Bleu Casserole.

My Secrets for Success with Chicken Cordon Bleu Casserole

• Use rotisserie chicken to make prep even faster.
• Shred your own Swiss cheese for a creamier melt.
• Toss panko with melted butter for a perfectly golden crust.
• Let your Chicken Cordon Bleu Casserole rest for 5-10 minutes before serving.

How I Serve and Store This Dish

My favorite way to serve this Chicken Cordon Bleu Casserole is with something simple and green, like steamed asparagus or a crisp garden salad, to balance the richness. Leftovers are fantastic! I store them in an airtight container in the refrigerator for up to three days. For reheating, I pop it back in the oven until it’s bubbly.

faq 1

Can I prepare this casserole ahead of time? Absolutely! This is one of the reasons I love it for entertaining. You can assemble the entire Chicken Cordon Bleu Casserole—except for the panko topping—up to 24 hours in advance. Just cover it tightly and refrigerate. When you’re ready to bake, sprinkle on the topping and add a few extra minutes to the cook time.

faq 2

What kind of ham is best for this recipe? I personally prefer using a good quality sliced deli ham, like Black Forest or Virginia ham. These varieties offer a wonderful savory and slightly smoky flavor that perfectly complements the chicken and nutty Swiss cheese in this delicious Chicken Cordon Bleu Casserole. I find that asking the deli to slice it to a medium thickness works best.

faq 3

Can I use a different type of cheese? While Swiss is classic for a Cordon Bleu, you can definitely experiment! Gruyère is a fantastic substitute, offering an even deeper, nuttier flavor that melts beautifully. If you prefer something milder, Provolone or a white cheddar would also work wonderfully in this creamy casserole, giving it a slightly different but equally delicious character.

faq 4

Is it possible to freeze this casserole? Yes, this casserole freezes quite well, which is great for meal planning. For the best texture, I recommend freezing it assembled but before baking. Wrap it securely in both plastic wrap and foil. It can be frozen for up to two months. Thaw overnight in the refrigerator before adding the topping and baking as directed.

Conclusion

This Chicken Cordon Bleu Casserole is a recipe I return to time and again for its comforting, delicious flavor. It holds a special place in my kitchen, and I truly hope it brings as much joy to your table as it does to mine. If you try it, I’d love to hear about it!

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