Step 1: Prepare the Ingredients

Start by preheating your oven to 375°F (190°C). Grease a 9×13-inch baking dish or casserole dish with nonstick spray or a light coating of butter. If you’re using fresh broccoli, blanch it in boiling water for 2-3 minutes, then drain and set aside. If you’re using frozen broccoli, ensure it’s thawed and patted dry to avoid excess moisture in the bake. Shred or dice your cooked chicken into bite-sized pieces.

Step 2: Make the Creamy Sauce

In a large mixing bowl, combine the sour cream, mayonnaise, cream of chicken soup, garlic powder, onion powder, paprika, and a generous pinch of salt and pepper. Whisk until the mixture is smooth and well combined. Stir in the shredded cheddar cheese and Parmesan cheese, reserving a little cheese for topping.

Step 3: Assemble the Bake

Spread the cooked chicken evenly across the bottom of the prepared baking dish. Layer the broccoli florets over the chicken. Pour the creamy sauce over the chicken and broccoli, using a spatula to spread it evenly. If you’re adding cooked rice or pasta, mix it into the sauce before spreading it over the dish.

Step 4: Add the Topping

For a crunchy topping, combine breadcrumbs or crushed crackers with melted butter in a small bowl. Sprinkle this mixture evenly over the top of the casserole. If you prefer a cheesy topping, simply sprinkle extra shredded cheddar cheese over the top instead.

Step 5: Bake to Perfection

Place the casserole in the preheated oven and bake for 25-30 minutes, or until the top is golden brown and the sauce is bubbling around the edges. If the topping isn’t browning to your liking, switch to the broiler for the last 2-3 minutes, keeping a close eye to prevent burning.

Step 6: Serve and Enjoy

Remove the Chicken Broccoli Bake from the oven and let it rest for 5 minutes before serving. This allows the flavors to meld and makes it easier to scoop out portions. Serve warm and enjoy!