Chicken Cordon Bleu Casserole is a hearty, comforting dish that takes the classic flavors of chicken, ham, and Swiss cheese and turns them into a warm, cheesy baked meal. It’s like all of the best parts of the traditional chicken cordon bleu rolled into an easy-to-make casserole. The tender chicken pieces, salty ham, creamy cheese, and crispy topping make it a crowd-pleaser every time.
I love making this casserole when I want something that feels special but doesn’t take forever to prepare. It’s one of those dishes that everyone asks for seconds of, and I don’t blame them! I usually use leftover roast chicken or rotisserie chicken to save time, but it’s just as delicious made from scratch. Plus, adding a crunchy breadcrumb topping gives it that perfect little bite on top that I find really satisfying.
For serving, I like to pair it with a simple green salad or some steamed veggies to balance out the richness. It also works great for a busy weeknight dinner or an easy weekend get-together with friends. Whenever I make this, it reminds me of cozy family meals and relaxed evenings at home, which is why this casserole has a special place in my recipe collection.
Key Ingredients & Substitutions
Chicken: Using cooked chicken breast works great here. Rotisserie chicken is a quick shortcut I often use—it adds lovely flavor without extra work. You can also use leftover turkey or even cooked tofu for a vegetarian twist.
Ham: Diced cooked ham brings a salty, smoky note. If you’re avoiding pork, try smoked turkey or cooked bacon as a swap—it keeps that smoky vibe. For less salt, choose low-sodium ham.
Swiss Cheese: This cheese melts smoothly and has a nutty flavor that fits perfectly. Gruyère is a great substitute if you want something with a bit more depth. Mozzarella or provolone make mild, gooey alternatives.
Panko Breadcrumbs: These create a crispy, golden topping. If you don’t have panko, regular breadcrumbs or crushed crackers also work. For gluten-free options, try gluten-free panko or chopped nuts.
How Do You Make a Smooth, Thick Cheese Sauce for the Casserole?
Making the cheese sauce is key to a creamy casserole. The roux (butter + flour) is the base and helps thicken the sauce without lumps.
- Melt butter over medium heat and whisk in flour. Stir constantly for about 1 minute to cook out the raw flour taste.
- Gradually pour in milk while whisking to keep the mix smooth.
- Keep stirring until the sauce thickens and coats the back of a spoon, about 4–5 minutes.
- Remove from heat before adding cheese so it melts smoothly and stays creamy.
- Adding Dijon mustard boosts flavor and balances the richness.
Take your time here and don’t rush the stirring; it prevents lumps and creates a silky sauce perfect for coating your chicken and noodles.
Equipment You’ll Need
- 9×13 inch baking dish – perfect size for even cooking and browning the casserole top.
- Medium saucepan – you’ll make the creamy cheese sauce here, so something with enough space to whisk.
- Whisk – helps mix the roux and milk smoothly without lumps.
- Large mixing bowl – to combine chicken, ham, noodles, and sauce easily.
- Measuring cups and spoons – for accurate ingredients and great results every time.
Flavor Variations & Add-Ins
- Swap ham for cooked bacon or pancetta for a more intense smoky flavor.
- Add sautéed mushrooms or spinach to boost veggies and add earthiness.
- Use Gruyère cheese instead of Swiss for a richer, nuttier taste.
- Stir in a teaspoon of garlic powder or paprika for a subtle flavor kick.
How to Make Chicken Cordon Bleu Casserole?
Ingredients You’ll Need:
Main Ingredients:
- 3 cups cooked chicken breast, diced or shredded
- 1 1/2 cups cooked ham, diced
- 8 oz egg noodles, cooked and drained
- 2 cups shredded Swiss cheese (divided)
- 1/2 cup grated Parmesan cheese
For the Cheese Sauce:
- 2 tbsp butter
- 2 tbsp all-purpose flour
- 2 cups milk (whole or 2%)
- 1 tsp Dijon mustard
- Salt and black pepper to taste
For the Topping:
- 1 cup panko breadcrumbs
- 2 tbsp fresh parsley, chopped (for garnish)
- Optional: a little melted butter to mix with breadcrumbs
How Much Time Will You Need?
This recipe takes about 15 minutes for prep and 25-30 minutes for baking, totaling around 45 minutes from start to finish. You’ll spend time cooking noodles and making a smooth cheese sauce, then bake the casserole until it’s bubbly and golden on top. Quick, easy, and delicious!
Step-by-Step Instructions:
1. Prepare Your Oven and Dish:
Start by preheating your oven to 350°F (175°C). Grease a 9×13 inch baking dish lightly to prevent sticking.
2. Make the Cheese Sauce:
In a medium saucepan, melt the butter over medium heat. Stir in the flour and whisk constantly for about 1 minute, creating a smooth roux. Slowly whisk in the milk and keep stirring until the sauce thickens—this usually takes about 4 to 5 minutes. Remove the pan from heat, stir in the Dijon mustard, and season with salt and black pepper. Then add 1 1/2 cups of Swiss cheese and the Parmesan cheese, stirring until the cheese melts completely.
3. Combine and Assemble:
In a large bowl, mix together the cooked chicken, diced ham, cooked egg noodles, and cheese sauce. Stir gently to make sure everything is well coated. Transfer this mixture to your prepared baking dish. Sprinkle the remaining 1/2 cup of Swiss cheese evenly over the top.
4. Add the Topping and Bake:
If you like, toss the panko breadcrumbs with a little melted butter for a richer, crunchier topping. Sprinkle the breadcrumbs evenly over the casserole. Bake uncovered for 25 to 30 minutes, or until the casserole is bubbly and the top is golden brown.
5. Serve and Enjoy:
Let the casserole cool for a few minutes after baking. Garnish with chopped fresh parsley for a pop of color and freshness. Serve warm and enjoy your creamy, cheesy Chicken Cordon Bleu Casserole!
Can I Use Frozen Chicken in This Recipe?
Yes! Just make sure the chicken is fully thawed before using. Thaw it overnight in the fridge or use the cold water method for quicker thawing. Pat dry to avoid extra moisture in the casserole.
Can I Make This Casserole Ahead of Time?
Absolutely! Prepare the casserole up to the baking step, cover tightly, and refrigerate for up to 24 hours. When ready, bake it a few extra minutes until hot and bubbly.
What Can I Substitute for Swiss Cheese?
Gruyère or mozzarella are great alternatives that melt well and complement the flavors. Avoid cheddar as it may overpower the delicate taste.
How Should I Store Leftovers?
Keep leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently in the oven or microwave to maintain creaminess and avoid drying out.
