Best Chicken Cordon Bleu Casserole Recipe
Introduction
This Best Chicken Cordon Bleu Casserole is a comforting, cheesy dish that combines tender chicken, savory ham, and rich Swiss cheese. It’s an easy twist on a classic favorite, perfect for busy weeknights or family gatherings.

Ingredients
- 3 cups cooked chicken, shredded or cubed
- 1 1/2 cups cooked ham, diced
- 2 cups shredded Swiss cheese, divided
- 1/2 cup sour cream
- 1/4 cup milk
- 1 tablespoon Dijon mustard
- 1/2 teaspoon garlic powder
- 1/2 teaspoon onion powder
- Salt and pepper to taste
- 1/2 cup bread crumbs, plain or seasoned (optional)
- 2 tablespoons melted butter (optional)
Instructions
- Step 1: Preheat your oven to 350°F (175°C). Grease a 9×13 inch baking dish to prevent sticking.
- Step 2: In a large mixing bowl, combine the cooked chicken, diced ham, and 1 1/2 cups of the shredded Swiss cheese.
- Step 3: In a separate bowl, whisk together the sour cream, milk, Dijon mustard, garlic powder, onion powder, salt, and pepper until smooth and well blended.
- Step 4: Pour the sour cream mixture over the chicken and ham mixture. Stir gently to coat everything evenly.
- Step 5: Transfer the combined mixture into the prepared baking dish and spread it out evenly.
- Step 6: Sprinkle the remaining 1/2 cup of Swiss cheese evenly over the top of the casserole.
- Step 7: If using, mix the bread crumbs with melted butter in a small bowl. Sprinkle this mixture over the cheese layer for a crispy topping.
- Step 8: Bake in the preheated oven for 25-30 minutes, or until the casserole is heated through and the cheese is melted and bubbly.
- Step 9: Let the casserole cool for a few minutes before serving to allow it to set and make serving easier.
Tips & Variations
- For extra flavor, add a teaspoon of dried thyme or Italian seasoning to the sour cream mixture.
- Swap the Swiss cheese for Gruyere or mozzarella if you prefer a different texture or flavor.
- Use seasoned bread crumbs for a more flavorful crunchy topping, or skip the topping for a softer finish.
- Leftover cooked turkey can be used instead of chicken for a delicious variation.
Storage
Store any leftover casserole in an airtight container in the refrigerator for up to 3 days. To reheat, warm individual portions in the microwave or heat the whole casserole covered with foil in a 350°F (175°C) oven until warmed through.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I prepare this casserole ahead of time?
Yes, you can assemble the casserole a day in advance, cover it, and refrigerate. Bake it when ready, adding a few extra minutes to the baking time if it’s chilled.
Can I freeze the chicken cordon bleu casserole?
Yes, this casserole freezes well. Wrap it tightly with foil or place in a freezer-safe container and freeze for up to 2 months. Thaw overnight in the refrigerator before baking.
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Best Chicken Cordon Bleu Casserole Recipe
- Total Time: 45 minutes
- Yield: 6 servings 1x
Description
This Best Chicken Cordon Bleu Casserole is a creamy, cheesy baked dish combining shredded chicken, diced ham, and Swiss cheese with a flavorful mixture of sour cream, Dijon mustard, and seasonings. Topped with melted cheese and optional buttery bread crumbs, this casserole is perfect for a comforting lunch or dinner.
Ingredients
Protein Mix
- 3 cups cooked chicken, shredded or cubed
- 1 1/2 cups cooked ham, diced
- 2 cups shredded Swiss cheese, divided
Sauce Mixture
- 1/2 cup sour cream
- 1/4 cup milk
- 1 tablespoon Dijon mustard
- 1/2 teaspoon garlic powder
- 1/2 teaspoon onion powder
- Salt and pepper to taste
Topping (Optional)
- 1/2 cup bread crumbs, plain or seasoned
- 2 tablespoons melted butter
Instructions
- Preheat and Prepare: Preheat your oven to 350°F (175°C) and grease a 9×13 inch baking dish to ensure the casserole doesn’t stick and cooks evenly.
- Combine Proteins and Cheese: In a large mixing bowl, mix the shredded chicken, diced ham, and 1 1/2 cups of shredded Swiss cheese to form the hearty base of the casserole.
- Make Sauce Mixture: In a separate bowl, whisk together sour cream, milk, Dijon mustard, garlic powder, onion powder, salt, and pepper until smooth and well combined to create a creamy sauce.
- Mix Protein with Sauce: Pour the sauce mixture over the chicken and ham mixture, stirring gently until all ingredients are evenly coated for consistent flavor throughout.
- Assemble in Baking Dish: Transfer the mixture into the prepared baking dish, spreading it out evenly to ensure even cooking and layering.
- Add Cheese Topping: Sprinkle the remaining 1/2 cup of Swiss cheese evenly over the top of the casserole to create a cheesy crust.
- Add Bread Crumb Topping (Optional): If using, combine bread crumbs with melted butter and sprinkle this mixture over the cheese to add a crispy, golden topping.
- Bake: Place the casserole in the preheated oven and bake for 25-30 minutes or until the casserole is heated through, and the cheese on top is melted and bubbly.
- Cool and Serve: Remove from oven and let the casserole cool for a few minutes before serving, allowing it to set for easier slicing and enhanced flavors.
Notes
- Using cooked chicken and ham saves time; leftovers work perfectly.
- The bread crumb topping is optional but adds a nice crunchy texture.
- Adjust seasoning with salt and pepper according to your taste preferences.
- For a lower-fat option, substitute sour cream with Greek yogurt.
- Serve with a side salad or steamed vegetables for a complete meal.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Casserole
- Method: Baking
- Cuisine: American
Keywords: Chicken Cordon Bleu Casserole, cheesy chicken casserole, baked chicken dish, easy casserole recipe, comfort food

