Chicken Broccoli Baked Alfredo is a cozy, creamy casserole made with tender cooked chicken, broccoli florets, pasta, Alfredo sauce, mozzarella, Parmesan, garlic, and Italian seasoning. It is rich, comforting, and perfect for busy weeknights when you want a filling dinner without complicated prep.
This baked Alfredo casserole comes together with simple ingredients and bakes until hot, bubbly, and cheesy. The pasta holds the creamy sauce, the chicken makes it hearty, and the broccoli adds color and freshness to balance the richness.
Why You’ll Love This Chicken Broccoli Baked Alfredo
- Easy weeknight dinner: With cooked chicken and jarred or homemade Alfredo sauce, this casserole is simple to assemble and bake.
- Creamy and cheesy: Mozzarella, Parmesan, and Alfredo sauce create a rich, comforting texture in every bite.
- Great use for cooked chicken: Rotisserie chicken works well, making this recipe faster and easier.
- Family-friendly: Pasta, chicken, cheese, and broccoli make a balanced comfort food meal that is easy to serve.
- Flexible pasta options: Penne, rotini, or shells all work well because they hold the creamy sauce.
- Perfect for leftovers: The casserole reheats well when warmed gently with a splash of milk or cream.
What Makes This Recipe Special
This recipe is special because it gives you the flavor of creamy chicken Alfredo in an easy baked casserole. Instead of cooking everything separately at the last minute, the pasta, chicken, broccoli, sauce, and cheese are mixed together and baked in one dish.
The top layer of mozzarella and Parmesan melts into a golden, bubbly finish, while the inside stays creamy and tender. It is simple enough for weeknights but still comforting enough for a family dinner.
Ingredients You’ll Need
Main Ingredients
- Cooked chicken: Use 3 cups of chopped or shredded cooked chicken. Rotisserie chicken works well for a quick option.
- Broccoli florets: Use 2 cups of fresh or frozen broccoli. If using frozen broccoli, thaw and drain it well first.
- Pasta: Use 12 ounces of pasta. Penne, rotini, or shells are recommended because they hold the sauce nicely.
- Alfredo sauce: Use 1 jar of store-bought Alfredo sauce or homemade Alfredo sauce.
- Mozzarella cheese: Use 2 cups shredded mozzarella, plus extra if you want a cheesier topping.
- Parmesan cheese: Use 1/2 cup grated Parmesan, plus extra for topping.
- Garlic: Use 2 cloves minced garlic. Fresh garlic gives the best flavor, but jarred garlic can also work.
- Italian seasoning: Adds a simple herb flavor that pairs well with the Alfredo sauce.
- Milk or cream: Use up to 1/2 cup as needed to loosen the sauce and adjust the consistency.
- Butter: Optional, but 2 tablespoons can add extra richness.
Seasonings
- Salt: Add to taste after mixing because Alfredo sauce and cheese can already be salty.
- Black pepper: Adds a simple savory finish.
- Red pepper flakes: Optional, for a small amount of heat.
Best Tips Before You Start
Cook the pasta until it is slightly undercooked. It will continue to soften while baking, so cooking it about 1 minute less than the package directions helps prevent mushy pasta.
Drain the broccoli well, especially if using frozen broccoli. Extra water can thin the Alfredo sauce and make the casserole watery.
Use most of the cheese inside the casserole, then save some for the top. This gives you a creamy inside and a melted cheesy finish.
If the mixture feels too thick before baking, add a small splash of milk or cream. This helps the sauce coat the pasta evenly.
How to Make Chicken Broccoli Baked Alfredo
Step 1: Prepare the Baking Dish
Preheat the oven to 375°F. Lightly grease a 9×13-inch baking dish so the casserole does not stick.
Step 2: Cook the Pasta
Cook the pasta in salted water until it is slightly undercooked, about 1 minute less than the package directions. Drain and set aside.
Step 3: Prepare the Broccoli
If using fresh broccoli, cut it into small florets and briefly blanch or microwave it until just tender. If using frozen broccoli, thaw it and drain it well.
Step 4: Mix the Casserole
In a large bowl, combine the cooked pasta, cooked chicken, broccoli, Alfredo sauce, minced garlic, Italian seasoning, and most of the mozzarella and Parmesan.
Step 5: Adjust the Sauce
If the mixture feels too thick, add a splash of milk or cream and stir until everything is evenly coated.
Step 6: Add to the Baking Dish
Pour the mixture into the prepared baking dish. Spread it evenly so the pasta, chicken, and broccoli are distributed throughout the casserole.
Step 7: Add the Cheese Topping
Top with the remaining mozzarella and Parmesan cheese. Add extra cheese if you want a thicker, cheesier topping.
Step 8: Bake
Bake uncovered for 20 to 25 minutes, or until the casserole is hot and bubbly.
Step 9: Brown the Top
For a more golden top, broil for 1 to 2 minutes at the end. Watch carefully so the cheese does not burn.
Step 10: Rest and Serve
Let the casserole rest for 5 to 10 minutes before serving. This helps the sauce settle and makes it easier to scoop.
Recipe Tips
- Use cooked chicken to keep the recipe quick and easy.
- Rotisserie chicken is a good shortcut for busy nights.
- Do not overcook the pasta before baking.
- Drain broccoli well to avoid a watery casserole.
- Add milk or cream only as needed to loosen the sauce.
- Use freshly grated Parmesan for a smoother flavor.
- Let the casserole rest before serving so it holds together better.
Substitutions and Variations
Rotisserie Chicken Alfredo Bake
Use chopped or shredded rotisserie chicken for the fastest version. It saves time and adds extra flavor to the casserole.
Homemade Alfredo Version
Use homemade Alfredo sauce if you want a richer, fresher flavor. Make sure the sauce is creamy enough to coat the pasta before baking.
Extra Cheesy Version
Add extra mozzarella on top before baking. You can also sprinkle more Parmesan over the casserole during the last few minutes.
Spicy Alfredo Bake
Add a pinch of red pepper flakes to the sauce mixture for gentle heat. You can also add more black pepper for a stronger savory flavor.
Vegetable Alfredo Bake
Add mushrooms, peas, spinach, or roasted peppers with the broccoli. Cook or drain vegetables first so they do not add too much moisture.
Different Pasta Shapes
Penne, rotini, shells, rigatoni, or bowtie pasta can all work. Short pasta shapes are best because they hold the creamy sauce well.
Make-Ahead and Storage
You can assemble the casserole ahead of time, cover it, and refrigerate it until ready to bake. If baking from cold, add a few extra minutes to the baking time.
Store leftovers covered in the refrigerator. Reheat gently in the microwave or oven until warmed through.
If the sauce thickens after chilling, add a splash of milk or cream before reheating to bring back the creamy texture.
This casserole is best served warm while the cheese is melted and the sauce is creamy.
What to Serve with Chicken Broccoli Baked Alfredo
Serve this casserole with garlic bread, dinner rolls, a green salad, roasted vegetables, cucumber salad, or steamed green beans.
It also pairs well with tomato salad, roasted asparagus, sautéed spinach, or a simple side of fresh fruit.
For a cozy dinner, serve it with iced tea, lemonade, sparkling water, or a light dessert like cream cheese pie or strawberry icebox cake.
More Recipes You May Like
- Garlic Butter Chicken Pasta
- Creamy Mushroom Pasta
- Baked Macaroni and Cheese
- Chicken and Dressing Casserole
Frequently Asked Questions
Can I use frozen broccoli?
Yes. Frozen broccoli works well, but thaw it and drain it well before adding it to the casserole. This helps keep the sauce creamy instead of watery.
Can I use jarred Alfredo sauce?
Yes. Jarred Alfredo sauce is a quick and easy option for this recipe. You can also use homemade Alfredo sauce if you prefer.
What pasta works best?
Penne, rotini, shells, or other short pasta shapes work best. They hold the Alfredo sauce and mix well with the chicken and broccoli.
Can I make this casserole ahead of time?
Yes. Assemble it ahead, cover it, and refrigerate it until you are ready to bake. Add a little extra baking time if it goes into the oven cold.
How do I keep the casserole creamy?
Do not overbake it, and add a splash of milk or cream if the mixture looks too thick before baking. Reheat leftovers gently with a little extra liquid if needed.
Can I add more cheese?
Yes. Add extra mozzarella or Parmesan on top before baking for a cheesier casserole. Broil briefly at the end if you want a more golden top.
This Chicken Broccoli Baked Alfredo is creamy, cheesy, easy, and comforting. With cooked chicken, broccoli, pasta, Alfredo sauce, mozzarella, Parmesan, garlic, and Italian seasoning, it is a simple baked dinner that works perfectly for busy weeknights and family meals.
Chicken Broccoli Baked Alfredo
Ingredients
Instructions
- Preheat the oven to 375°F. Lightly grease a 9×13 baking dish.
- Cook the pasta in salted water until slightly undercooked, about 1 minute less than package instructions. Drain and set aside.
- Prepare the broccoli. If using fresh, cut into small florets and briefly blanch or microwave. If using frozen, thaw and drain well.
- In a large bowl, combine cooked pasta, chicken, broccoli, Alfredo sauce, garlic, Italian seasoning, and most of the mozzarella and parmesan. If too thick, add a splash of milk and mix well.
- Pour the mixture into the prepared baking dish, spreading it evenly. Top with remaining mozzarella and parmesan.
- Bake uncovered for 20 to 25 minutes until hot and bubbly. For a more browned top, broil for 1-2 minutes, watching carefully.
- Let the casserole rest for 5-10 minutes before serving.
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