Creamy Swiss Chicken Bake is absolutely delicious. Chicken breasts are smothered in an easy-to-make Swiss cheese sauce, covered in crispy, seasoned breadcrumbs, then baked until bubbly. It's an easy chicken casserole the whole family will love!
Heat the butter in a medium-sized pot over medium-high heat. Whisk in the flour and let it cook for 1 minute. Add the chicken stock, garlic powder, onion powder, and salt, and whisk well. Continue to whisk until the stock thickens.
Tear the swiss cheese slices into smaller pieces then add them to the pot and stir it into the sauce. Add the sour cream and stir once more.
In a small bowl, mix the melted butter, breadcrumbs, and Italian seasoning.
Gently pound the thickest part of the chicken using the palm of your hand until the breasts are even in thickness. Season the chicken with salt and pepper.
Pour half of the cheese sauce into the casserole dish. Add the chicken and top each piece with a piece of Swiss cheese. Pour the rest of the sauce around the chicken.
Sprinkle the buttered bread crumbs over the chicken then bake the chicken for 45 minutes, or until hot, bubbly, and cooked through. Check the chicken periodically and if the breadcrumbs are browning too quickly, cover the casserole with aluminum foil.
In this recipe, we use Swiss cheese slices in both the sauce and on the chicken. They're usually sold in packages of 8 slices, which is how many you need for this recipeIn recipe testing, we found that this chicken takes longer to cook than a regular chicken breast recipe as the chicken is packed tightly in the casserole dish. If you're using a larger baking dish, check the chicken after 30 minutes.