Creating Broccoli Cheddar Chicken and Noodle Casserole is straightforward if you follow these simple steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Cook Noodles: In a large pot, boil water and cook the egg noodles according to package instructions. Drain and set aside.
3. Prepare Broccoli: In a separate pot, steam the broccoli florets until slightly tender, about 3-4 minutes. Drain and set aside.
4. Mix Ingredients: In a large mixing bowl, combine the cooked noodles, shredded chicken, steamed broccoli, cream of chicken soup, milk, garlic powder, onion powder, salt, and pepper. Stir until well combined.
5. Add Cheese: Fold in half of the shredded cheddar cheese into the mixture, reserving the other half for topping.
6. Transfer to Casserole Dish: Pour the mixture into a greased 9×13-inch casserole dish, spreading it evenly.
7. Top with Cheese: Sprinkle the remaining cheddar cheese over the top of the casserole.
8. Breadcrumb Topping (Optional): If using, mix the breadcrumbs with melted butter and sprinkle over the cheese for an added crunch.
9. Bake: Place the casserole in the preheated oven and bake for 30-35 minutes, or until the cheese is bubbly and golden.
10. Cool: Once baked, remove the casserole from the oven and allow it to cool for a few minutes before serving.

These steps will guide you in creating this incredible casserole effortlessly.