If you love the classic flavors of Chicken Cordon Bleu but want a hassle-free meal, this casserole is your new go-to. Layers of cooked chicken, diced ham, and Swiss cheese are combined with a rich, creamy sauce, then baked to golden perfection. It’s a simple, crowd-pleasing dish that’s perfect for busy evenings, family dinners, or meal prepping ahead of time.

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Ingredients

For the Casserole:

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3 cups cooked chicken, shredded or cubed (rotisserie chicken works well)
1 ½ cups cooked ham, diced
2 cups shredded Swiss cheese, divided
1 (10.75 oz) can cream of chicken soup
½ cup sour cream
¼ cup milk
1 tablespoon Dijon mustard
½ teaspoon garlic powder
½ teaspoon onion powder
Salt and pepper, to taste

Optional Topping:

½ cup bread crumbs (plain or seasoned)
2 tablespoons melted butter

Instructions for Chicken Cordon Bleu Casserole

1. Prepare the Casserole

Preheat oven to 350°F (175°C). Grease a 9×13 inch baking dish.
In a large mixing bowl, combine chicken, ham, and 1 ½ cups Swiss cheese. Mix evenly.
In a separate bowl, whisk together cream of chicken soup, sour cream, milk, Dijon mustard, garlic powder, onion powder, salt, and pepper until smooth.
Pour the creamy mixture over the chicken and ham, stirring gently until everything is coated.
Transfer the mixture to the prepared baking dish, spreading it evenly.

2. Add the Topping and Bake

Sprinkle the remaining ½ cup Swiss cheese over the casserole.
Optional: Mix bread crumbs with melted butter and sprinkle on top for a crispy finish.
Bake for 25–30 minutes until bubbly and lightly golden.
Allow to cool for 5–10 minutes before serving.

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Pro Tips

Use high-quality ham and Swiss cheese for maximum flavor.
Avoid overbaking to keep the casserole moist.
Tent with foil if the topping browns too quickly.
For extra richness, swap Swiss cheese with Gruyere.
Pre-shredded cheese and pre-cooked ham save time without sacrificing taste.

Why This Recipe Works

This casserole combines convenience and flavor. It captures the essence of classic Chicken Cordon Bleu without the fuss of breading and stuffing individual breasts. Perfect for busy weeknights, it’s also a smart way to use leftover chicken or ham while satisfying the whole family.

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Substitutions & Variations

Vegetables: Add broccoli, mushrooms, or asparagus for extra nutrition.
Cheese Options: Gruyere, provolone, or mozzarella work beautifully.
Sauce Variations: Add a creamy mushroom or béchamel sauce for richness.
Spice: A pinch of red pepper flakes or hot sauce adds a subtle kick.
Protein Swaps: Substitute turkey or pork for chicken or ham.
Add Carbs: Mix in cooked pasta or rice to make it more filling.

Make-Ahead, Storage & Reheating Guide

Assemble casserole up to 24 hours in advance and refrigerate. Add 5 extra minutes to baking.
Store leftovers in an airtight container in the refrigerator for up to 3 days.
Reheat in the oven or microwave until warmed through.

Serving Ideas for Chicken Cordon Bleu Casserole

Serve with a crisp green salad and light vinaigrette.
Steamed vegetables like broccoli, green beans, or asparagus pair perfectly.
Warm garlic bread complements the creamy casserole.
Mashed potatoes make a comforting, hearty side.

Nutrition (Per Serving Estimate)

Calories: 450 kcal
Protein: 35 g
Carbohydrates: 10 g
Fat: 28 g

Frequently Asked Questions

Q: Can I prepare this casserole ahead of time?
A: Yes! Assemble up to 24 hours in advance and refrigerate. Add extra baking time.

Q: Can I add vegetables?
A: Absolutely! Mushrooms, broccoli, or asparagus are great additions.

Q: Which cheese works best?
A: Swiss cheese is classic, but Gruyere, provolone, or mozzarella are delicious alternatives.

Q: How long will leftovers last?
A: Store in the fridge for up to 3 days and reheat thoroughly before serving.

This Best Chicken Cordon Bleu Casserole delivers all the flavors of the traditional dish in an easy, baked casserole form. Perfect for weeknight dinners, it’s creamy, cheesy, and irresistibly comforting. Give it a try, and it will quickly become a family favorite.