Make this easy, warm chicken salad casserole for a comforting family dinner or your next potluck. It features a creamy chicken mixture baked under a buttery, crunchy cracker topping.
Preheat your oven to 350 degrees F. Lightly grease a 9×13 inch baking dish.
In a large bowl, combine the shredded chicken, celery, and onion if you are using it.
In a separate medium bowl, whisk together the cream of chicken soup, sour cream, mayonnaise, Dijon mustard, salt, and pepper until smooth.
Pour the soup mixture over the chicken and celery mixture. Stir gently until everything is evenly coated.
Spread the chicken mixture evenly into the prepared baking dish. Sprinkle the shredded cheddar cheese over the top.
In a small bowl, mix the crushed crackers with the melted butter. Sprinkle this buttery cracker topping evenly over the cheese layer.
Bake for 25 to 30 minutes, or until the casserole is hot and bubbly throughout and the topping is golden brown.
Let the hot chicken salad casserole rest for 5 minutes before you serve it warm.
Notes
You can substitute potato chips or cornflakes for the buttery crackers if you prefer a different crunch for your topping.
For a make-ahead option, prepare the casserole completely, cover it, and refrigerate for up to 24 hours. Add about 10 minutes to the baking time if baking directly from the refrigerator.
This recipe is a great potluck chicken dish because it travels well and reheats nicely.