Cheesy Chicken Cordon Bleu Casserole (Keto + Family Favorite!)

If you love classic Chicken Cordon Bleu but don’t want the hassle of rolling and breading, this casserole version is honestly a lifesaver. It’s creamy, cheesy, loaded with flavor, and fits perfectly into a keto lifestyle. Plus, it’s one of those dinners that kids and adults both actually enjoy without complaints (which is rare, right?).

I’ve made this many times on busy weeknights, and every single time the pan gets wiped clean. It’s rich but comforting, and the combination of chicken, ham, and melted cheese just works so well.

Why This Recipe Works (and Why I Keep Making It)

Low carb & keto-friendly – no breadcrumbs, no flour
Easy weeknight dinner – minimal prep, oven does most of the work
Family approved – even picky eaters usually love it
Meal prep friendly – reheats surprisingly well
Budget conscious – uses simple grocery store ingredients

There’s something about the creamy Dijon sauce that really ties everything together… I sometimes add a bit extra because honestly it’s too good.

Ingredients You’ll Need

Main Ingredients:

3 cups cooked chicken breast (shredded or cubed)
1 ½ cups diced deli ham (or leftover ham)
2 cups shredded Swiss cheese
1 cup shredded mozzarella cheese

Creamy Sauce:

1 cup heavy cream
4 oz cream cheese (softened)
1 tablespoon Dijon mustard
1 teaspoon garlic powder
½ teaspoon onion powder
Salt and black pepper (to taste)

Optional Keto Topping:

½ cup crushed pork rinds
2 tablespoons melted butter
2 tablespoons grated Parmesan cheese

Ingredient Tips

Chicken: Rotisserie chicken works great here and saves time. I use it often when I’m tired, which is most weekdays.
Ham: Go for a good-quality deli ham, it makes a difference in flavor. Avoid super watery ones.
Cheese: Swiss is classic for cordon bleu, but mixing mozzarella gives that stretchy, melty texture.
Dijon mustard: Don’t skip this. It gives that signature tangy flavor, even if you think you don’t like mustard.

Step-by-Step Instructions

1. Preheat Oven

Set your oven to 375°F and lightly grease a 9×13-inch baking dish.

2. Prep the Chicken

If using fresh chicken, cook and shred it first. Otherwise just chop your rotisserie chicken into bite-sized pieces.

3. Combine Chicken and Ham

In a large mixing bowl, toss together the chicken and diced ham evenly.

4. Make the Creamy Base

In another bowl, mix heavy cream, cream cheese, and Dijon mustard until smooth. It might look slightly lumpy at first but keep mixing.

5. Add Seasoning

Stir in garlic powder, onion powder, salt, and pepper. Taste it if you want, I always do.

6. Mix Everything Together

Pour the sauce over the chicken and ham mixture. Stir until everything is coated well.

7. Add Cheese

Fold in about 1½ cups of the Swiss cheese and half of the mozzarella. Save the rest for topping.

8. Transfer to Baking Dish

Spread the mixture evenly into your prepared casserole dish.

9. Add Cheese Layer

Sprinkle remaining Swiss and mozzarella cheese over the top.

10. Prepare Keto Topping (Optional but recommended)

Mix crushed pork rinds with melted butter and Parmesan. Sprinkle over the casserole. It adds a nice crunch, trust me.

11. Bake

Bake uncovered for 25–30 minutes until bubbly and golden on top.

12. Rest Before Serving

Let it sit for about 5–10 minutes. It thickens up a bit and is easier to serve (I sometimes skip this and regret it lol).

Nutrition Facts (Per Serving – Approximate)

Calories: 420
Protein: 32g
Fat: 30g
Net Carbs: 3–4g
Fiber: 0g
Sugar: 1g

Estimated Cost

Chicken (rotisserie or breast): $6–$8
Ham: $3–$5
Cheese: $5–$7
Cream & extras: $4–$6

Total Cost: Around $18–$25 for the whole dish
Cost per serving (6 servings): About $3–$4

Not bad at all for something this filling.

When & Why You’ll Want to Make This

Best Time: Dinner, especially weeknights
Season: Fall and winter are perfect, but honestly works year-round
Mood: Comfort food cravings, lazy cooking days, or when you just want something warm and cheesy
Occasions: Family dinners, potlucks, keto gatherings, meal prep Sundays

My Personal Take While Cooking This

The first time I made this, I was honestly unsure how it would turn out without the crispy breaded chicken layer. But once it came out of the oven, smelling all cheesy and creamy… yeah, that doubt disappeared fast.

Sometimes I accidentally add too much cheese (not really accidental tho), but it still turns out amazing. Also, don’t overbake it or it can get slightly dry, happened to me once and I was annoyed.

One thing I noticed is kids tend to like it more if you chop everything smaller. Not sure why but it works.

Extra Tips (That Actually Help)

Use freshly shredded cheese for better melting
Add a splash of chicken broth if the sauce feels too thick
Want more flavor? Add a pinch of smoked paprika
Store leftovers in fridge up to 3 days (it reheats good, not perfect but good enough)