01 - Preheat the oven to 350°F (180°C).
02 - In a large mixing bowl, thoroughly combine shredded chicken, softened cream cheese, shredded cheddar cheese, ranch seasoning mix, and milk until fully blended.
03 - Gently fold half of the crumbled bacon into the chicken mixture.
04 - Transfer the prepared mixture to a baking dish and bake uncovered for 20 to 25 minutes, or until the cheese is melted and the filling is hot and bubbly.
05 - Stir the hot filling, then distribute evenly onto the bottom halves of the sandwich buns.
06 - Top each portion with the remaining crumbled bacon and add pickles, lettuce, or tomato as desired. Place the bun tops over the filling.
07 - Serve sandwiches warm for best flavor and texture.