Creating Ina Garten’s Chicken Casserole is straightforward with these clear steps:

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

2. Sauté Vegetables: In a large skillet, heat a tablespoon of olive oil over medium heat. Add the chopped onion, celery, and carrots. Sauté until softened, about 5-7 minutes.

3. Combine Ingredients: In a large mixing bowl, combine the shredded chicken, sautéed vegetables, frozen peas, and cooked rice.

4. Make the Sauce: In a separate bowl, whisk together the chicken stock, heavy cream, garlic powder, dried thyme, salt, and black pepper.

5. Mix Together: Pour the sauce over the chicken and vegetable mixture. Stir until everything is well combined.

6. Transfer to Baking Dish: Pour the mixture into a greased 9×13-inch baking dish. Spread it out evenly.

7. Add Cheese: Sprinkle the grated cheese evenly over the top of the casserole.

8. Prepare Topping: In a small bowl, combine crushed potato chips or breadcrumbs with a tablespoon of melted butter. Mix until well-coated.

9. Top the Casserole: Evenly sprinkle the buttery potato chip or breadcrumb mixture over the cheese layer.

10. Bake: Place the casserole in the preheated oven and bake for 40-50 minutes or until the top is golden and bubbly.

11. Cool Slightly: Once baked, remove from the oven and let the casserole cool for about 10 minutes before serving.

By following these steps, you’ll create your own divine Chicken Casserole that will wow your friends and family!