01 - Preheat oven to 350°F (180°C).
02 - In a large mixing bowl, combine shredded chicken, softened cream cheese, shredded cheddar, ranch seasoning, and milk. Mix thoroughly until homogenous.
03 - Fold half of the crumbled bacon into the chicken mixture.
04 - Transfer mixture to a baking dish and bake uncovered for 20 to 25 minutes, or until bubbling and heated through.
05 - Stir the baked filling. Divide the creamy chicken evenly onto the lower halves of the sandwich buns.
06 - Top with remaining crumbled bacon and, if desired, pickles, lettuce, or tomato. Close with the top bun and serve warm.