Preheat the Oven: Set your oven to 350°F and lightly grease a square baking dish with butter or non-stick spray.
Mix the Main Ingredients: In a large bowl, combine the chicken, shredded cheddar cheese, chopped celery, and crumbled bacon.
3 cups cooked chicken, 1 cup shredded sharp cheddar cheese, 1 cup finely chopped celery, ¼ cup cooked bacon
Make the Dressing: In a small bowl, whisk together the mayonnaise, dry ranch mix, lemon juice, Worcestershire sauce, and onion powder. Add salt and pepper to taste.
1 ¼ cups mayonnaise, 1 tablespoon dry ranch seasoning mix, ½ tablespoon lemon juice, 1 teaspoon Worcestershire sauce, ½ teaspoon onion powder, Salt and freshly ground black pepper
Combine Everything: Pour the dressing into the chicken mixture and stir until everything is evenly coated.
Assemble the Casserole: Transfer the mixture to the greased baking dish and spread it out evenly. Sprinkle the crushed potato chips on top.
1 cup potato chips
Bake It: Place the dish in the oven and bake for 25–30 minutes, or until the top is golden and the casserole is hot and bubbly.
Serve Hot: Take it out of the oven and serve it while it’s still warm and crispy on top.