Chicken Cordon Bleu Casserole Recipe

Why You’ll Love This Chicken Cordon Bleu Casserole

Chicken Cordon Bleu Casserole is one of those easy baked dinners that feels a little fancy without asking much from you. It has all the comfort of the classic chicken cordon bleu flavors, but in a simple casserole form that is perfect for busy weeknights, family meals, potlucks, and church suppers.

• Easy to make: This Chicken Cordon Bleu Casserole comes together fast with shredded cooked chicken, cubed ham, a creamy cheese sauce, and a Panko topping. You do not have to roll, bread, or fry anything.
• Great for leftovers: If you have extra rotisserie chicken or leftover ham, this casserole turns them into a full meal with very little effort.
• Filling and protein-rich: Thanks to the chicken, ham, Swiss cheese, and Parmesan, this dish is hearty enough to keep everyone full. For more about the nutrition profile of chicken, you can also read this WebMD guide to the health benefits of chicken.
• Family-friendly flavor: The mix of Dijon mustard, lemon juice, and creamy cheese sauce gives this Chicken Cordon Bleu Casserole a tangy, rich flavor that stands out without being too strong.

If you need a dinner that feels cozy, feeds a crowd, and still tastes special, this is a solid one to keep in your back pocket.

This quick, crowd-pleasing casserole is ideal for leftovers or family meals, and it serves about 8. It is the kind of recipe that works for working parents, students, seniors, or anyone who wants a warm meal without spending all evening in the kitchen.

If you like hearty family bakes, you may also enjoy this loaded mashed potato casserole as a cozy side dish for gathering meals.

Essential Ingredients for Chicken Cordon Bleu Casserole

Here is everything you need for this Chicken Cordon Bleu Casserole recipe. The ingredients are simple, and each one plays a clear role in the final dish.

Main Ingredients

• 5 1/2 cups shredded cooked chicken – This is the base of the casserole and gives it plenty of hearty protein.
• 2 cups cubed ham – The ham brings the classic cordon bleu flavor and pairs well with the creamy sauce.
• 4 tablespoons butter – Used in the cheese sauce to create a rich roux and help it thicken.
• 1/4 cup all-purpose flour – Helps build the creamy sauce texture.
• 2 cups milk, preferably at least 2% fat – Gives the sauce its smooth, creamy body.
• 1 tablespoon Dijon mustard – Adds that sharp, classic cordon bleu taste.
• 1 tablespoon lemon juice – Brightens the sauce and keeps the flavor balanced.
• 1/2 teaspoon garlic powder – Adds a little savory depth.
• 1/4 teaspoon salt, adjust to taste – Helps bring all the flavors together.
• 1 1/4 cups shredded Swiss cheese, about 5 ounces – The classic cheese for this casserole, with a nutty, melty finish.
• 1/4 cup grated Parmesan cheese – Adds salty, sharp flavor to the sauce.
• 1 cup Panko breadcrumbs – Gives the top a crisp, crunchy finish.
• 2 tablespoons melted butter – Helps the Panko topping brown and crisp up in the oven.

Special Dietary Options

• Vegan: Use plant-based chicken, vegan ham slices, dairy-free butter, unsweetened oat milk, vegan Swiss-style cheese, and vegan Parmesan.
• Gluten-free: Swap the all-purpose flour with a gluten-free flour blend or cornstarch slurry, and use gluten-free breadcrumbs.
• Low-calorie: Use reduced-fat cheese, light milk, and less butter, or increase the chicken and reduce the topping a little.

How to Prepare the Perfect Chicken Cordon Bleu Casserole: Step-by-Step Guide

First Step: Get the oven and pan ready

Start by preheating your oven to 350°F. Grease a 9×13-inch casserole dish so the chicken cordon bleu casserole does not stick. This also makes cleanup much easier, which is always a win on a busy night.

While the oven heats, gather your ingredients and measure everything out. That way, once the sauce starts cooking, you can move fast and avoid lumps. If you are using leftover chicken, make sure it is shredded or chopped into bite-sized pieces. Rotisserie chicken works great here.

Second Step: Layer the chicken and ham

Spread the shredded cooked chicken evenly in the bottom of the prepared casserole dish. Next, layer the cubed ham over the chicken. This order helps every bite carry both meats and keeps the base sturdy under the creamy sauce.

If you want to stretch the dish for a larger group, you can mix in cooked rice, pasta, or broccoli. That turns this chicken cordon bleu casserole into a bigger meal without changing the core flavor.

Third Step: Make the cheese sauce

Melt 4 tablespoons of butter in a saucepan over medium heat. Stir in 1/4 cup of all-purpose flour and cook for 1 to 2 minutes until it looks clumpy. This is the roux, and it helps thicken the sauce later.

Slowly whisk in 2 cups of milk, preferably at least 2% fat. Keep whisking so the sauce stays smooth. Then add 1 tablespoon Dijon mustard, 1 tablespoon lemon juice, 1/2 teaspoon garlic powder, and 1/4 teaspoon salt. Let it simmer for 3 to 5 minutes, stirring constantly, until the sauce thickens. Do not rush this part. A little patience here keeps the casserole creamy instead of watery.

Once the sauce is thick, take it off the heat and stir in 1 1/4 cups shredded Swiss cheese and 1/4 cup grated Parmesan cheese. Stir until melted and smooth. Taste the sauce and adjust the salt if needed.

For the best texture, use milk that is at least 2% fat. Skim milk can make the sauce thinner and less stable.

Fourth Step: Assemble the casserole

Pour the cheese sauce evenly over the chicken and ham. Use a spoon or spatula to spread it out so the sauce reaches the corners of the dish. You want every bite to have a little sauce, a little meat, and a little crunch on top.

If you are making this ahead, stop here and cover the dish without adding the topping. Keep it in the fridge until you are ready to bake. This makes the chicken cordon bleu casserole a strong choice for meal prep, company dinners, or church potlucks.

Fifth Step: Add the Panko topping

In a small bowl, mix 1 cup Panko breadcrumbs with 2 tablespoons melted butter. Stir until the crumbs are lightly coated. Sprinkle the mixture evenly over the top of the casserole.

This topping is what gives the dish that golden finish. If you like a little extra punch, you can add a bit more Parmesan or a pinch of paprika to the breadcrumb mixture. That gives the top a little more color and flavor.

Final Step: Bake and serve

Bake the casserole uncovered for 30 to 35 minutes, or until it is bubbly and golden on top. The baking time may vary a little depending on your oven and how cold the casserole was when it went in. If you assembled it ahead of time from the fridge, it may need a few extra minutes.

Let the finished chicken cordon bleu casserole cool for 5 to 10 minutes before serving. This helps the sauce settle a bit so it is easier to scoop. Serve warm and enjoy it with salad, roasted vegetables, pasta, or rice.

Dietary Substitutions to Customize Your Chicken Cordon Bleu Casserole

Protein and Main Component Alternatives

This Chicken Cordon Bleu Casserole is easy to adapt if you need to work with what you have on hand. Any cooked chicken will do, including rotisserie chicken, baked chicken, grilled chicken, or leftover boiled chicken. If you want a shortcut, rotisserie is probably the easiest pick because it already has good flavor and moisture.

If ham is not your thing, you can swap in turkey or cooked bacon for a different flavor. For a lighter version, use more chicken and less ham. You can also add cooked pasta, rice, or broccoli if you want a bigger family-style bake.

Vegetable, Sauce, and Seasoning Modifications

If you want to switch up the cheese, try mozzarella, provolone, or cheddar in place of Swiss. The sauce will still be creamy and comforting, just with a slightly different flavor. If you like a stronger kick, add more Dijon mustard or a little extra Parmesan.

For a lower-carb version, use almond flour in place of the all-purpose flour and keep the rest of the casserole the same. Gluten-free cooks can use a gluten-free flour blend and gluten-free Panko. Dairy-free versions are possible too, but you may need to adjust the sauce so it thickens properly. A little paprika in the topping also gives the casserole a nice finish.

Mastering Chicken Cordon Bleu Casserole: Advanced Tips and Variations

Pro cooking techniques

To keep your Chicken Cordon Bleu Casserole creamy, do not let the sauce boil hard after the cheese goes in. Stir it over low heat just until smooth. Also, make sure the chicken is not dripping wet before it goes into the dish. Excess moisture can thin the sauce and make the casserole soupy.

If your chicken is very moist, pat it dry with paper towels first. That small step can make a big difference in the final texture. For a crispier top, you can broil the casserole for 1 to 2 minutes at the end, but keep a close eye on it so the Panko does not burn.

Flavor variations

You can add cooked broccoli, peas, pasta, or rice to the base for a fuller meal. Broccoli gives the dish a little color and pairs well with the cheese sauce. Pasta makes it feel almost like a baked comfort-food skillet, while rice helps soak up the sauce.

For more flavor, add a pinch of paprika, black pepper, or extra garlic powder to the sauce or topping. Some cooks even like a little more mustard for a sharper edge. If you enjoy chicken dinner ideas, you might also like this chicken parmesan pasta skillet for another easy family meal.

Presentation tips

Serve the casserole in squares or scoops with a simple green salad on the side. A sprinkle of parsley on top adds color, though it is optional. If you are bringing it to a potluck or church supper, bake it in the casserole dish and serve it right from the pan for easy transport.

This dish also works well beside a crisp vegetable side, buttered noodles, or mashed potatoes. It has enough flavor to stand on its own, but it plays nicely with simple sides.

Make-ahead options

This chicken cordon bleu casserole is a great make-ahead dish. You can assemble the base and sauce up to 24 hours ahead, then cover and refrigerate it without the Panko topping. Add the topping right before baking so it stays crisp.

You can also freeze the base without the topping for up to 3 months. Thaw it overnight in the fridge, add fresh Panko mixed with melted butter, and bake as directed. That makes this recipe especially handy for busy weeks, new parents, and anyone who likes to plan meals ahead.

How to Store Chicken Cordon Bleu Casserole: Best Practices

Store leftovers in an airtight container in the refrigerator for up to 3 to 4 days. The casserole tastes great the next day, and the flavors often settle together nicely after resting.

For freezing, cool the baked casserole completely first. Wrap it well or place portions in freezer-safe containers. If you know you want the best texture, freeze the base without the topping and add fresh Panko before baking. This helps the top stay crisp instead of soggy.

To reheat, cover the casserole and warm it in a 350°F oven until heated through. You can uncover it for the last few minutes to crisp the top again. Microwave reheating works too for smaller portions, but the oven gives better texture.

For meal prep, portion the casserole into individual containers once cooled. That makes lunches and quick dinners much easier during the week.

FAQs: Frequently Asked Questions About Chicken Cordon Bleu Casserole

Chicken Cordon Bleu Casserole

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🍗 Enjoy the classic Chicken Cordon Bleu flavors in an easy casserole packed with high protein from chicken and ham for satisfying family meals!
🧀 Creamy Swiss cheese sauce and crunchy Panko topping create a comforting, crowd-pleasing dish that’s quick to assemble and bake!

• Total Time: 45 minutes
• Yield: 8 servings 1x

Ingredients

Scale 1x2x3x

5 1/2 cups shredded cooked chicken for base of the casserole

2 cups cubed ham for classic cordon bleu flavor

4 tablespoons butter for cheese sauce roux

1/4 cup all-purpose flour for creamy sauce texture

2 cups milk, preferably at least 2% fat for smooth creamy body

1 tablespoon Dijon mustard for sharp classic cordon bleu taste

1 tablespoon lemon juice for brightening the sauce

1/2 teaspoon garlic powder for savory depth

1/4 teaspoon salt, adjust to taste for bringing flavors together

1 1/4 cups shredded Swiss cheese, about 5 ounces for classic cheese

1/4 cup grated Parmesan cheese for salty sharp flavor

1 cup Panko breadcrumbs for crisp crunchy topping

2 tablespoons melted butter for Panko topping

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Instructions

1-First Step: Get the oven and pan ready Start by preheating your oven to 350°F. Grease a 9×13-inch casserole dish so the chicken cordon bleu casserole does not stick. This also makes cleanup much easier, which is always a win on a busy night. While the oven heats, gather your ingredients and measure everything out. That way, once the sauce starts cooking, you can move fast and avoid lumps. If you are using leftover chicken, make sure it is shredded or chopped into bite-sized pieces. Rotisserie chicken works great here.

2-Second Step: Layer the chicken and ham Spread the shredded cooked chicken evenly in the bottom of the prepared casserole dish. Next, layer the cubed ham over the chicken. This order helps every bite carry both meats and keeps the base sturdy under the creamy sauce. If you want to stretch the dish for a larger group, you can mix in cooked rice, pasta, or broccoli. That turns this chicken cordon bleu casserole into a bigger meal without changing the core flavor.

3-Third Step: Make the cheese sauce Melt 4 tablespoons of butter in a saucepan over medium heat. Stir in 1/4 cup of all-purpose flour and cook for 1 to 2 minutes until it looks clumpy. This is the roux, and it helps thicken the sauce later. Slowly whisk in 2 cups of milk, preferably at least 2% fat. Keep whisking so the sauce stays smooth. Then add 1 tablespoon Dijon mustard, 1 tablespoon lemon juice, 1/2 teaspoon garlic powder, and 1/4 teaspoon salt. Let it simmer for 3 to 5 minutes, stirring constantly, until the sauce thickens. Do not rush this part. A little patience here keeps the casserole creamy instead of watery. Once the sauce is thick, take it off the heat and stir in 1 1/4 cups shredded Swiss cheese and 1/4 cup grated Parmesan cheese. Stir until melted and smooth. Taste the sauce and adjust the salt if needed. For the best texture, use milk that is at least 2% fat. Skim milk can make the sauce thinner and less stable.

4-Fourth Step: Assemble the casserole Pour the cheese sauce evenly over the chicken and ham. Use a spoon or spatula to spread it out so the sauce reaches the corners of the dish. You want every bite to have a little sauce, a little meat, and a little crunch on top. If you are making this ahead, stop here and cover the dish without adding the topping. Keep it in the fridge until you are ready to bake. This makes the chicken cordon bleu casserole a strong choice for meal prep, company dinners, or church potlucks.

5-Fifth Step: Add the Panko topping In a small bowl, mix 1 cup Panko breadcrumbs with 2 tablespoons melted butter. Stir until the crumbs are lightly coated. Sprinkle the mixture evenly over the top of the casserole. This topping is what gives the dish that golden finish. If you like a little extra punch, you can add a bit more Parmesan or a pinch of paprika to the breadcrumb mixture. That gives the top a little more color and flavor.

6-Final Step: Bake and serve Bake the casserole uncovered for 30 to 35 minutes, or until it is bubbly and golden on top. The baking time may vary a little depending on your oven and how cold the casserole was when it went in. If you assembled it ahead of time from the fridge, it may need a few extra minutes. Let the finished chicken cordon bleu casserole cool for 5 to 10 minutes before serving. This helps the sauce settle a bit so it is easier to scoop. Serve warm and enjoy it with salad, roasted vegetables, pasta, or rice.

Last Step:

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Notes

🐔 Use leftover cooked chicken to make this an effortless weeknight dinner!
🧀 Feel free to substitute Swiss cheese with mozzarella, provolone, or cheddar for a twist.
❄️ Assemble the casserole ahead without the topping, refrigerate, and add topping just before baking.

• Author: Brandi Oshea
• Prep Time: 5 minutes
• Cook Time: 35 minutes
• Category: Main Dish
• Method: Baking
• Cuisine: American
• Diet: High Protein

Nutrition

• Serving Size: 1/8 of casserole
• Calories: 400 kcal
• Sugar: 3g
• Sodium: 800mg
• Fat: 22g
• Saturated Fat: 11g
• Unsaturated Fat: 9g
• Trans Fat: 0g
• Carbohydrates: 12g
• Fiber: 1g
• Protein: 35g
• Cholesterol: 120mg