Preheat your oven to 375°F. It’s important to get your oven warmed up so that the cheese melts perfectly when you bake the casserole.
Take a 9X13 casserole dish and coat it with cooking spray or brush it with olive oil to keep the pasta from sticking. This step ensures that your dish comes out clean and easy to serve.
Cook the penne pasta according to the package directions until it’s al dente. Once cooked, drain it and set the pasta aside. The pasta should have a little bite to it since it will continue to cook in the oven.
In a mixing bowl, combine the softened cream cheese, ranch dressing, and buffalo sauce until it becomes a creamy mixture. Use a whisk or a spatula to mix well, ensuring all the ingredients are thoroughly blended.
Add the shredded rotisserie chicken, minced garlic, chicken broth, 1 cup of mozzarella cheese, 1 cup of cheddar cheese, and the cooked penne pasta into the cheesy mixture. Stir everything together until all the ingredients are well combined, and you can see the creamy sauce coating the pasta and chicken.
Season the mixture with salt and black pepper to taste. Don’t be shy! The seasonings elevate the dish.
Spoon the cheesy pasta mixture into the prepared casserole dish and spread it out evenly. Make sure all the ingredients are evenly distributed so every bite is packed with flavor.
Sprinkle the remaining cheese over the top of the pasta in the casserole dish. It’s the cheese that makes this dish irresistible!
Place the casserole dish in the preheated oven. Bake for about 20 minutes or until the cheese on top has melted and turns golden brown. Keep an eye on it towards the end to prevent burning.
Once the casserole is done baking, remove it from the oven. To serve, garnish the Buffalo Chicken Pasta bake with thinly sliced green onions and, if you prefer, add crumbled blue cheese for an extra burst of flavor. You can also drizzle some extra buffalo sauce or ranch dressing on top for added tanginess.