Creating the perfect Chicken Alfredo Pasta Bake is easy when you follow these steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Cook the Pasta: In a large pot, bring salted water to a boil. Add the pasta and cook until al dente according to package instructions. Drain and set aside.
3. Sauté the Chicken and Broccoli: In a large skillet, heat olive oil over medium heat. Add the cooked chicken and broccoli (if using) and sauté for about 5 minutes.
4. Add the Sauce: Stir in the Alfredo sauce and season with garlic powder and black pepper. Mix well to combine.
5. Combine Pasta and Sauce: Add the cooked pasta to the skillet and toss everything together until the pasta is evenly coated.
6. Assemble the Bake: Transfer the pasta mixture into a greased 9×13-inch baking dish. Spread it evenly.
7. Add Cheese: Top the pasta with shredded mozzarella and grated Parmesan.
8. Bake: Place the dish in the preheated oven and bake for 25-30 minutes, or until the cheese is bubbly and golden.
9. Cool and Garnish: Remove from the oven and let it cool for a few minutes. Garnish with fresh parsley, if desired.
10. Serve: Slice into portions and serve warm.

With these clear steps, you’ll have an incredible Chicken Alfredo Pasta Bake ready in no time.