Chicken Cordon Bleu Casserole takes everything I like about classic chicken cordon bleu and turns it into a much easier family dinner. You still get tender chicken, savory ham, plenty of melted cheese, and that creamy sauce, but you don’t have to spend time stuffing and rolling individual chicken breasts.
I usually reach for this kind of casserole when I want something filling without making a complicated meal. The chicken and ham give it plenty of flavor, while the creamy sauce brings everything together in one dish.
The first time I made a casserole version, I liked how forgiving it was. You can layer everything into the baking dish, add the cheese and crunchy topping, and let the oven do most of the work.
It also makes a great dinner when you have leftover cooked chicken in the fridge. Instead of letting it sit there for another day, you can turn it into a warm, cheesy meal that everyone can scoop straight from the baking dish.
Why You Will Love This Recipe
- Easy to assemble: There is no stuffing, rolling, or complicated breading.
- Creamy and cheesy: The sauce keeps the chicken moist and gives every bite plenty of flavor.
- Great for leftovers: Cooked chicken makes this casserole come together even faster.
- Family-friendly: Chicken, ham, and cheese are simple flavors that work well together.
- Good for busy nights: Most of the work is mixing and layering before the casserole goes into the oven.
Ingredients for Chicken Cordon Bleu Casserole
For the Casserole
- 2 cups cooked chicken, chopped: I like using cooked chicken breast, but rotisserie chicken works just as well. Cut it into small bite-size pieces so you get chicken in every scoop.
- 4 ounces sliced ham, chopped: Ham gives the casserole that classic cordon bleu flavor and adds a salty, savory contrast to the creamy sauce. Deli ham is perfectly fine here.
- 1 cup shredded Swiss cheese: Swiss gives you the familiar flavor of chicken cordon bleu and melts nicely over the chicken and ham.
- 1/2 cup shredded mozzarella cheese: Mozzarella adds extra meltiness without overpowering the Swiss cheese.
- 4 ounces cream cheese, softened: This makes the sauce thick, creamy, and rich. Let it soften first so it mixes smoothly.
- 1/2 cup sour cream: Sour cream adds a little tang and helps loosen the cream cheese into a spoonable sauce.
- 1/2 cup chicken broth: The broth keeps the sauce from becoming too thick while adding more savory chicken flavor.
- 1 tablespoon Dijon mustard: Dijon gives the creamy sauce a little sharpness and brings out the flavor of the ham and Swiss cheese.
- 1/2 teaspoon garlic powder: This adds mild garlic flavor throughout the casserole without needing fresh garlic.
- 1/4 teaspoon black pepper: A little pepper balances the creamy ingredients and ham.
For the Topping
- 1/2 cup breadcrumbs: Breadcrumbs give the top a light crunch that contrasts with the creamy casserole underneath. Regular or panko breadcrumbs will work.
- 1 tablespoon melted butter: Butter helps the breadcrumbs turn golden and crisp as the casserole bakes.
- 2 tablespoons grated Parmesan: Parmesan adds extra savory flavor to the crunchy topping and helps it brown nicely.
How to Make Chicken Cordon Bleu Casserole
- Preheat the oven: Set your oven to 375°F and lightly grease an 8×8-inch or similar-sized baking dish. Greasing the dish makes serving easier and keeps the creamy mixture from sticking around the edges.
- Prepare the chicken and ham: Chop the cooked chicken and ham into small pieces. Try to keep the pieces fairly similar in size so the casserole has an even texture instead of large chunks of chicken in some bites.
- Make the creamy sauce: Add the softened cream cheese, sour cream, chicken broth, Dijon mustard, garlic powder, and black pepper to a bowl. Stir until the mixture is mostly smooth and creamy. A few small cream cheese lumps are fine, but keep mixing until everything is well combined.
- Combine the filling: Add the chopped chicken and ham to the bowl with the sauce. Stir gently until the chicken and ham are evenly coated. This is where the casserole starts coming together, so make sure the sauce reaches all the pieces.
- Add the cheese: Stir in about half of the Swiss cheese and half of the mozzarella. Keeping some cheese aside for the top gives you that melted, golden layer after baking.
- Transfer to the baking dish: Spoon the chicken mixture into the prepared baking dish and spread it into an even layer. Press it gently into the corners so the casserole cooks evenly from edge to edge.
- Prepare the crunchy topping: In a small bowl, combine the breadcrumbs, melted butter, and Parmesan. Mix until the breadcrumbs are lightly coated with butter. This simple topping adds a nice contrast to the creamy filling.
- Finish the casserole: Sprinkle the remaining Swiss and mozzarella cheese over the chicken mixture. Then spread the buttered breadcrumbs and Parmesan evenly over the top. Try not to leave large bare areas because the topping is one of the best parts of the casserole.
- Bake until hot and bubbly: Place the casserole in the oven and bake for about 20 to 25 minutes, or until the edges are bubbling and the center is heated through. The cheese should be melted and the breadcrumb topping should start turning golden brown.
- Brown the top if needed: If the casserole is hot but the topping still looks pale, place it under the broiler for 1 to 2 minutes. Watch it closely because breadcrumbs can go from golden to burnt quickly.
- Let it rest before serving: Remove the casserole from the oven and let it sit for about 5 minutes. This gives the creamy filling a chance to settle slightly, making it easier to scoop without everything running across the plate.
What to Serve Chicken Cordon Bleu Casserole With
I like serving this casserole with something fresh or lightly cooked because the filling is already creamy and rich. Steamed broccoli, green beans, roasted asparagus, or a simple green salad all work well. If you want a more filling dinner, serve it with roasted potatoes, mashed potatoes, or a little rice to soak up the extra sauce.
For a lighter meal, I would keep the sides simple. A crisp salad with a tangy dressing is especially nice because the acidity cuts through the richness of the cheese and cream sauce. You really don’t need much alongside this casserole since the chicken, ham, and cheese already make it quite satisfying.
How to Store and Reheat Chicken Cordon Bleu Casserole
Store leftover casserole in an airtight container or cover the baking dish tightly and keep it in the refrigerator for up to 3 to 4 days. I actually find that the flavors settle nicely overnight, so leftovers can be just as enjoyable the next day. For the best texture, reheat individual portions in the oven or air fryer until hot, which helps bring some crispness back to the topping. You can use the microwave when you’re in a hurry, but the breadcrumb topping will become softer. If the casserole seems a little dry after refrigeration, add a small splash of chicken broth before reheating.
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