First Step: Preheat Oven and Prepare Baking Dish Set your oven to 350°F (175°C). Lightly grease a 9×9-inch (23×23 cm) baking dish to prevent sticking and ease cleanup.

Second Step: Mix Filling Ingredients In a large mixing bowl, combine chopped cooked chicken, softened cream cheese, cottage cheese, sour cream, cream of chicken soup, garlic powder, and onion powder. Stir until the mixture is smooth and well blended for uniform flavor and creamy texture.

Third Step: Assemble the Casserole Spread the chicken mixture evenly into the prepared baking dish, smoothing the surface to ensure even baking and consistent texture throughout.

Fourth Step: Prepare Topping In a separate bowl, mix crushed crackers or panko crumbs with melted butter. If adding shredded cheddar cheese, mix it into this topping mixture. Stir until ingredients are evenly coated.

Fifth Step: Add Topping and Bake Sprinkle the buttery crumb topping evenly over the chicken filling. Place the casserole in the preheated oven and bake uncovered for 30 to 40 minutes, or until the casserole is bubbly and golden brown on top.

Final Step: Rest and Serve Remove the casserole from the oven and let it rest for about 10 minutes to allow flavors to meld and to cool slightly for safe serving. Garnish with dried parsley if desired for a fresh appearance. Enjoy the homestyle baked chicken casserole warm as a comforting main course.