This Chicken Cordon Bleu Casserole will knock your socks off. It is so much easier than a traditional rolled and breaded cordon bleu and has even more flavor. With chicken, ham, and swiss in a creamy dijon sauce, you won't miss the breading one bit. Since you aren't coating or stuffing the chicken it is quick and easy. This is pure comfort food and an easy main course dinner. This easy recipe is low carb, keto, gluten free, grain free, sugar free, and Trim Healthy Mama friendly.
I love chicken cordon bleu. But it's always breaded.
This has been on my to-do list since my husband and I went to a fundraiser back in May. They had the best chicken cordon bleu ever. I knew I could make the same flavors into a killer casserole.
My casserole version was a hit with my family. I wasn't sure if the kids would like the swiss cheese (honestly, I'm not a huge swiss cheese fan) but it worked so well with this flavor combination there were no complaints.
What is Chicken Cordon Bleu
Here is a little history on this iconic dish (thank you, Wikipedia ):
A cordon bleu or schnitzel cordon bleu is a dish of meat wrapped around cheese (or with cheese filling), then breaded and pan-fried or deep-fried. (Veal) cordon bleu is made of veal pounded thin and wrapped around a slice of ham and a slice of cheese, breaded, and then pan fried or baked .  For chicken cordon bleu chicken breast is used instead of veal.  Ham cordon bleu is ham stuffed with mushrooms and cheese. 
The origins of cordon bleu as a schnitzel filled with cheese are in Switzerland, probably about the 1940s, first mentioned in a cookbook from 1949. The earliest reference to "chicken cordon bleu" in The New York Times is dated to 1967, while similar veal recipes are found from at least 1955. 
What to serve with Chicken Casserole
What kind of sauce goes with Chicken Cordon Bleu
We love this creamy lemon sauce on our Chicken Cordon Bleu Casserole. It is rich with the butter and cream cheese and the lemon juice, mustard, and white wine really help the flavors to pop.
Sometimes I just make the sauce and drizzle on chicken tenders or vegetables.
How to Make Chicken Cordon Bleu Casserole
First Step: Layer chicken and ham in a 9 x 13 baking dish.
Second Step: Make the sauce and spread it on top.
Third Step: Layer on the cheese.
Fourth Step: Bake until hot, bubbly, and golden.
What to serve with Keto Chicken Cordon Bleu
This is a very rich casserole. Butter. Cream Cheese. Swiss Cheese. You get the drift. So I serve this with lighter side dishes like a green salad, oven-roasted green beans , steamed cauliflower, or roasted asparagus .
Tips & Tweaks
I've had readers sub in other mild cheeses like provolone, mozzarella, or Havarti so feel free to tailor this to your family's tastes.
One of the most important things for this recipe to make sure the chicken is nice and juicy. If the chicken is moist this will be moist and flavorful. If you are started with dry chicken I recommend making 1.5 times the sauce to compensate. Or even doubling it.
You can even save a step by baking chicken tenderloins, draining the cooking liquid, and then proceeding with the recipe. No shredding required!
Preheat the oven to 350. Put the chicken in the bottom of a 9 x 13 baking dish. Layer the pieces of ham on top.
In a large bowl with an electric mixer combine the melted butter, softened cream cheese, white wine (if using), mustard, lemon juice, and salt. Blend until a thick sauce forms. Spread this sauce over the chicken and ham in the baking dish.
Lay the slices of swiss cheese on top of the sauce. Bake for 30-40 minutes until hot.
I broiled it for 2 minutes at the end so the cheese would get more golden and bubbly. If you decided to do that do not leave it unattended. It's very easy to burn the cheese topping.
- If you have a bottle of dry white wine open it adds a nice flavor. But I wouldn't open a new bottle just for this recipe. Unless you are planning on having a glass while you cook.
- If your shredded chicken is on the dry side you may want to double the amount of sauce or add in ¼ cup of chicken broth and mix the sauce into the shredded chicken before adding the toppings.
- You can use chicken tenderloins instead of shredded chicken. Just cook, drain the cooking liquid, and then proceed with the rest of the recipe.
Originally Published August 31, 2016. Revised and Republished with a new video on May 6, 2019.