Chicken & Broccoli Alfredo Bake

Creamy, Cheesy, Oven-Baked Comfort Food

If you’re looking for a comforting dinner that combines tender chicken, hearty pasta, fresh broccoli, and plenty of creamy cheese, this Chicken & Broccoli Alfredo Bake is a must-try. Everything is coated in a rich homemade Alfredo sauce, topped with mozzarella and Parmesan, then baked until golden, bubbly, and irresistibly cheesy.

This easy casserole has all the flavors you love in classic chicken Alfredo, but with the cozy appeal of a cheesy oven-baked pasta dish. It’s perfect for busy weeknights, family dinners, meal prep, or feeding a crowd.

Why You’ll Love This Chicken & Broccoli Alfredo Bake

Creamy Homemade Alfredo Sauce

Forget the jarred sauce. This recipe features a simple homemade Alfredo sauce made with butter, garlic, heavy cream, and freshly grated Parmesan for a rich, smooth, and flavorful finish.

A Complete Comfort-Food Meal

Tender chicken provides satisfying protein, while broccoli adds color, texture, and a fresh vegetable component. Combined with pasta and creamy sauce, it makes a filling meal all in one dish.

Great for Busy Weeknights

The casserole can be assembled ahead of time and baked when you’re ready, making it an excellent option for hectic evenings.

Family-Friendly

Creamy Alfredo sauce, tender pasta, chicken, broccoli, and a golden cheesy topping create a combination that’s hard to resist—even for picky eaters.

Ingredients

For the Pasta Bake

• 300 g (10 oz) pasta, such as penne, rotini, or rigatoni
• 450 g (1 lb) boneless, skinless chicken breast, cut into bite-size pieces
• 300 g (about 3 cups) broccoli florets
• 2 tablespoons olive oil
• 1 teaspoon Italian seasoning
• Salt and black pepper, to taste

For the Homemade Alfredo Sauce

• 60 g (4 tablespoons) unsalted butter
• 3 garlic cloves, minced
• 2 tablespoons all-purpose flour
• 2 cups heavy cream
• 1 cup freshly grated Parmesan cheese
• ½ teaspoon salt
• ½ teaspoon black pepper
• ¼ teaspoon ground nutmeg, optional

For the Cheesy Topping

• 1 cup shredded mozzarella cheese
• ¼ cup grated Parmesan cheese
• Chopped fresh parsley, for garnish

How to Make Chicken & Broccoli Alfredo Bake

Step 1: Cook the Pasta

Bring a large pot of salted water to a boil. Add the pasta and cook according to the package directions until just al dente.

Avoid cooking the pasta until completely tender because it will continue cooking in the oven. Drain well and set aside.

Step 2: Cook the Broccoli

Steam or blanch the broccoli for about 2–3 minutes, just until it turns bright green and becomes slightly tender.

Drain thoroughly and set aside. Keeping the broccoli slightly crisp helps prevent it from becoming mushy during baking.

Step 3: Cook the Chicken

Heat the olive oil in a large skillet over medium heat.

Season the chicken pieces with Italian seasoning, salt, and black pepper. Add the chicken to the skillet and cook for about 6–8 minutes, stirring occasionally, until golden brown and cooked through.

The chicken should reach an internal temperature of 165°F (74°C).

Remove from the skillet and set aside.

How to Make the Homemade Alfredo Sauce

Step 4: Sauté the Garlic

Melt the butter in a saucepan or clean skillet over medium heat. Add the minced garlic and cook for about 30–45 seconds, just until fragrant.

Be careful not to let the garlic brown.

Step 5: Make the Roux

Whisk the flour into the melted butter. Continue whisking for about 1 minute to cook the flour and create a smooth roux.

Step 6: Add the Cream

Gradually pour in the heavy cream while whisking constantly. Continue cooking for about 3–5 minutes, stirring frequently, until the sauce begins to thicken.

Step 7: Stir in the Parmesan

Reduce the heat to low and add the freshly grated Parmesan, salt, black pepper, and nutmeg, if using.

Stir until the cheese has completely melted and the sauce is smooth and creamy.

If the sauce becomes too thick, add a small splash of milk or cream until it reaches a pourable consistency.

Assemble the Casserole

Step 8: Combine the Ingredients

Preheat the oven to 375°F (190°C).

Add the cooked pasta, chicken, broccoli, and Alfredo sauce to a large mixing bowl. Gently toss until everything is evenly coated.

Step 9: Fill the Baking Dish

Lightly grease a 9×13-inch baking dish.

Transfer the pasta mixture to the dish and spread it into an even layer.

Sprinkle the mozzarella and remaining Parmesan evenly over the top.

Step 10: Bake Until Golden and Bubbly

Place the casserole in the preheated oven and bake uncovered for 20–25 minutes, or until the cheese is completely melted, bubbly, and lightly golden around the edges.

For an extra-golden topping, broil for 2–3 minutes at the end. Keep a close eye on it while broiling to prevent burning.

Let It Rest

Remove the casserole from the oven and let it rest for 5–10 minutes before serving.

This gives the creamy sauce a chance to settle and makes the casserole easier to serve.

Finish with freshly chopped parsley for a bright touch of color.

Expert Tips for the Best Alfredo Bake

• Use freshly grated Parmesan. It melts more smoothly and gives the sauce better flavor than many pre-shredded varieties.
• Don’t overcook the pasta. Slightly undercooked pasta holds its texture better after baking.
• Keep the Alfredo sauce at a gentle heat. Avoid vigorously boiling it after adding the cheese.
• Drain the broccoli well. Excess water can make the casserole watery.
• Let the casserole rest before serving. This helps the sauce thicken slightly and keeps the portions together.
• Add milk when reheating. A small splash helps bring the creamy texture back to leftover Alfredo pasta.

Easy Variations

Add Mushrooms

Sauté sliced mushrooms until golden and tender, then stir them into the pasta mixture before baking.

Make It Spicy

Add a pinch of red pepper flakes or cayenne pepper to the Alfredo sauce for a little heat.

Make It Extra Creamy

For an even richer casserole, stir 2 tablespoons of softened cream cheese into the Alfredo sauce.

Use Rotisserie Chicken

Save time by replacing the cooked chicken breast with shredded rotisserie chicken.

Try Whole-Wheat Pasta

For a heartier option, substitute whole-wheat pasta for regular pasta and use half-and-half instead of heavy cream.

What to Serve with Chicken & Broccoli Alfredo Bake

Because this casserole is rich and creamy, it pairs especially well with fresh or lightly seasoned sides.

Try serving it with:

• Garlic bread
• Caesar salad
• Caprese salad
• Roasted vegetables
• Steamed asparagus
• Fresh green beans

A crisp green salad is particularly delicious alongside the creamy Alfredo sauce.

Make-Ahead Instructions

This casserole is easy to prepare ahead of time.

Assemble the pasta, chicken, broccoli, and Alfredo sauce in the baking dish, then add the cheese topping. Cover tightly and refrigerate for up to 24 hours.

When ready to bake, allow the dish to sit at room temperature briefly while the oven preheats. You may need to add a few extra minutes to the baking time if the casserole is thoroughly chilled.

Storage and Reheating

Refrigerator

Store leftover Chicken & Broccoli Alfredo Bake in an airtight container in the refrigerator for up to 4 days.

Freezer

For longer storage, wrap the casserole tightly and freeze for up to 2 months.

For best texture, thaw overnight in the refrigerator before reheating.

Reheating

Reheat individual portions in the microwave or warm the casserole in a 350°F (175°C) oven, covered with foil.

Add a small splash of milk or cream before reheating to help loosen the sauce and restore its creamy consistency.

Frequently Asked Questions

Can I use rotisserie chicken?

Yes! Rotisserie chicken is an excellent shortcut. Simply shred or chop the cooked chicken and add it to the pasta mixture.

Can I make this casserole ahead of time?

Absolutely. Assemble the casserole, cover it, and refrigerate it for up to 24 hours before baking.

Can I use frozen broccoli?

Yes. Thaw the broccoli first and drain away excess water before adding it to the casserole. This helps prevent the dish from becoming watery.

Why did my Alfredo sauce become grainy?

A grainy sauce is often caused by excessive heat when the cheese is added. Keep the heat low and stir the Parmesan in gradually until smooth.

Can I use a different type of pasta?

Definitely. Penne, rotini, rigatoni, shells, and other sturdy pasta shapes all work well. Choose a shape that can hold plenty of Alfredo sauce.

Final Thoughts

This Chicken & Broccoli Alfredo Bake is everything you want in a cozy family dinner: creamy, cheesy, hearty, and incredibly satisfying. Tender chicken, perfectly cooked pasta, fresh broccoli, and homemade garlic Parmesan Alfredo sauce come together beneath a golden layer of melted cheese.

Whether you’re making dinner for the family, preparing meals ahead of time, or simply craving a comforting baked pasta dish, this easy Alfredo casserole is one you’ll want to make again and again.