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

Scale

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