Preheat oven to 350 degrees F.
Spray a 9x13-inch baking dish with cooking spray.
In a large bowl, whisk together condensed soups and milk. Stir in cooked chicken, garlic, and 3 tablespoons chopped, fresh parsley (save the remaining parsley for a garnish at the end).
Pour chicken mixture into prepared baking dish.
In a separate bowl, pour melted butter over dry stuffing mix. Gently stir until all of the stuffing mix is coated with butter. Sprinkle over chicken mixture.
Cover baking dish with foil. Bake, covered, at 350 degrees F for 20 minutes. Remove foil and bake for an additional 10-20 minutes, or until heated through and browned on top.
