Preheat Your Oven: Start by preheating your oven to 350°F (175°C), preparing for the glorious baking ahead.
Mix the Ingredients: In a large mixing bowl, combine the shredded chicken, cooked rice, broccoli florets, and the cream of chicken soup. Add the milk, garlic powder, onion powder, salt, and pepper. Stir until everything is well combined.
Transfer to Casserole Dish: Pour the mixture into a greased casserole dish, spreading it out evenly.
Add Cheese: Generously sprinkle the shredded cheddar cheese on top of the chicken and rice mixture.
Prepare the Cracker Topping: In a separate bowl, mix the crushed crackers with melted butter and then sprinkle this over the cheese layer for added crunch.
Bake: Place the casserole in the oven and bake for 30-35 minutes or until it's bubbly and golden brown on top.
Cool and Serve: Once baked, take it out of the oven and let it cool slightly before serving. Enjoy with your loved ones!