Begin by preheating your oven to 350°F. In a mixing bowl, combine the two cans of cream of chicken soup with the milk until well blended. Prepare a 9x13-inch casserole dish by spraying it lightly with cooking spray.

Layer the ingredients in the following order: start with a layer of crushed Doritos, followed by the shredded chicken, then pour over the soup mixture, and finally sprinkle with cheddar cheese. Repeat these layers approximately three times. As a finishing touch, add an extra layer of crushed Doritos on top.