Here’s how to create your Mashed Potato Casserole with Crispy Chicken:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).

2. Cook the Potatoes: In a large pot, add the chopped russet potatoes. Cover with water and bring to a boil. Cook until tender, about 15-20 minutes. Drain well.

3. Make the Mashed Potatoes: In the same pot, add the drained potatoes back in. Add butter, milk, salt, and pepper. Mash the potatoes until smooth and creamy.

4. Prepare the Chicken Mixture: In a bowl, combine the cooked chicken, garlic powder, onion powder, and half of the shredded cheese if using. Mix well.

5. Combine Ingredients: In a greased 9×13-inch baking dish, spread half of the mashed potatoes on the bottom. Layer the chicken mixture on top, then cover with the remaining mashed potatoes.

6. Add Topping: In a separate bowl, mix breadcrumbs with olive oil, then sprinkle over the top of the casserole.

7. Bake: Place the casserole in the preheated oven and bake for 30-35 minutes until golden and heated through.

8. Cool Slightly: Remove from the oven and let cool for about 15 minutes before serving.

9. Garnish: Sprinkle fresh parsley over the top for an extra touch of flavor and color.

By following these simple steps, you’ll create a savory dish that’s sure to impress!