Creating Chicken and Potato Casserole is straightforward. Just follow these easy steps:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Prepare Casserole Dish: Grease a large casserole dish with olive oil to prevent sticking.
3. Mix Ingredients: In a large mixing bowl, combine the chicken pieces, diced potatoes, chopped onions, and broccoli florets (if using).
4. Prepare Sauce: In another bowl, mix the cream of chicken soup, sour cream, garlic powder, onion powder, paprika, salt, and pepper until well blended.
5. Combine: Pour the mixture over the chicken and potatoes, stirring well to ensure everything is evenly coated.
6. Transfer to Dish: Transfer the combined mixture into the greased casserole dish, spreading it out evenly.
7. Add Cheese: Sprinkle the shredded cheddar cheese generously over the top.
8. Bake: Cover the dish with aluminum foil and bake for 45-55 minutes. Remove the foil halfway through to allow the cheese to brown.
9. Check for Doneness: Ensure the chicken is cooked through and the potatoes are tender by piercing them with a fork.
10. Serve: Allow the casserole to cool slightly before serving. Enjoy every delicious bite!