Name: Creamy Chicken Alfredo Casserole Recipe
Prep time: 25 min
Cook time: 35 min
Total time: 1 h
Cuisine: Italian-American
Ingredients: 16 ounce box penne pasta; 3 cups cubed chicken breasts; 2 tablespoons olive oil; Salt and pepper, to taste; 2 (15 ounce) jars alfredo sauce; 8 ounce block cream cheese, softened to room temperature; 1 cup whole milk; 3 cloves garlic, minced; 1 teaspoon Italian seasoning; ½ teaspoon salt; ¼ teaspoon black pepper; 2 cups shredded mozzarella cheese (divided use); 1 cup grated parmesan cheese (divided use); Chopped fresh parsley or dried parsley (optional)

This might be the creamiest, coziest dinner you’ll want to make all week — a dreamy Creamy Chicken Alfredo Casserole Recipe that brings all the indulgent flavors together in one pan. Let me show you how to make it your new go-to comfort meal!

A blue baking dish filled with a creamy pasta bake, showing layers of short pasta mixed with white sauce and shredded white meat on the bottom, topped with melted white cheese that is slightly browned in spots. Fresh green basil leaves are scattered on the top layer, adding color contrast. A spoon lifts a portion out, stretching melted cheese strings above the dish. The dish sits on a blue and white striped cloth on a white marbled surface. Photo taken with an iphone --ar 2:3 --v 7

Jump to:

Why You'll Love This Recipe
Ingredients & Why They Work
Make It Your Way
Step-by-Step: How I Make Creamy Chicken Alfredo Casserole Recipe
Top Tip
How to Serve Creamy Chicken Alfredo Casserole Recipe
Make Ahead and Storage
Frequently Asked Questions:
Final Thoughts
Creamy Chicken Alfredo Casserole Recipe

Why You'll Love This Recipe

I fell in love with this casserole because it’s a lifesaver on busy nights and everyone at my table begs for seconds. It’s creamy, cheesy, and ridiculously easy to customize to your taste, which means you’ll want to keep this recipe on hand forever.

Comfort in every bite: The blend of creamy Alfredo sauce with tender chicken and pasta feels like a warm hug on a plate.
Super simple to make: With pantry staples and minimal prep, you’ll have dinner in under an hour.
Family-friendly: Both kids and adults love it, and it’s perfect for feeding a crowd.
Flexible recipe: You can easily swap in veggies or different cheeses for your own twist.

Ingredients & Why They Work

This recipe brings together creamy, savory, and cheesy flavors in perfect harmony. Each ingredient has a purpose, whether it's to build rich sauce, tenderize the chicken, or add a melty topping. Here’s why I love these ingredients and some tips for picking them out.

Flat lay of a small mound of uncooked pale golden penne pasta, a few raw whole chicken breast cubes with a natural pink hue, three whole brown garlic cloves, a soft block of cream cheese with a smooth surface, a small white ceramic bowl filled with creamy white whole milk, a small white ceramic bowl containing golden olive oil, a small white ceramic bowl filled with creamy shredded mozzarella cheese, a small white ceramic bowl holding finely grated pale yellow parmesan cheese, a small white ceramic bowl with a rich white Alfredo sauce, a sprig of fresh bright green parsley, sprinkled salt crystals, and whole black peppercorns arranged in perfect symmetry, all placed on a clean white marble surface, soft natural light, photo taken with an iPhone, professional food photography style, fresh ingredients, white ceramic bowls, no bottles, no duplicates, no utensils, no packaging --ar 2:3 --v 7 --p m7354615311229779997

Penne pasta: Holds sauce well with its ridged shape and provides great texture.
Olive oil: Adds flavor and helps the chicken brown nicely without drying out.
Chicken breasts: Lean protein that cooks quickly; cubing them ensures even cooking.
Alfredo sauce: Using jars keeps this recipe quick, but you can also make homemade for extra freshness.
Cream cheese: Brings deep creaminess and richness, making the sauce luxuriously thick.
Whole milk: Balances cream cheese for a silky texture without being too heavy.
Garlic: Adds aromatic depth and warmth to the creamy sauce.
Italian seasoning: Layers in classic herbs that complement chicken and cheese beautifully.
Mozzarella cheese: Melts like a dream and creates that irresistible gooey top layer.
Parmesan cheese: Sharpness that cuts through richness and adds nutty flavor.
Parsley: Fresh finish that brightens the dish visually and flavor-wise.

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Note: You'll find the complete list of ingredients, along with their exact measurements, in the printable recipe card at the bottom of this post.

Make It Your Way

I love mixing in sautéed mushrooms or spinach for extra veggies. Sometimes I swap shredded rotisserie chicken to save time or use half-and-half instead of whole milk for a lighter sauce. This casserole really welcomes your personal touches.

Vegetable boost: Toss in steamed broccoli or sun-dried tomatoes before baking for added color and flavor — my kids never complain!

Step-by-Step: How I Make Creamy Chicken Alfredo Casserole Recipe

This image shows a close-up of a plate with creamy penne pasta mixed with small chunks of light beige cooked chicken, all covered in a smooth white sauce. The pasta tubes are pale yellow, soft and coated in the sauce, sprinkled with small bits of chopped green parsley for a fresh contrast. The dish is served on a white plate placed on a white marbled surface, with part of another white plate of pasta and a white cup blurred in the background. The textures show creamy sauce with some black pepper flecks visible. Photo taken with an iphone --ar 2:3 --v 7

Step 1: Cook your pasta just right

Start by boiling the penne pasta until it’s al dente — firm but not mushy. Overcooked pasta can make the casserole soggy, so keep an eye on the time and taste-test a piece before draining. Toss it with a bit of olive oil if you want to prevent clumping while prepping the rest.

Step 2: Sauté the chicken with love

Heat olive oil in a skillet and add cubed chicken seasoned with salt and pepper. Stir occasionally to get an even golden crust and cook through, about 6-8 minutes. Juicy tender chicken is key here — don’t rush and make sure pieces aren’t too big.

Step 3: Whisk together the creamy sauce

In a large bowl, blend Alfredo sauce, softened cream cheese, milk, garlic, Italian seasoning, salt, and pepper. The cream cheese thickens the sauce and adds richness that packs a flavor punch. Make sure the cream cheese is soft to avoid lumps.

Step 4: Combine pasta, chicken, and sauce

Mix the cooked pasta and chicken gently into the sauce until everything is coated. Then fold in half of the shredded mozzarella and parmesan — this helps bind the casserole once baked and gives a gooey, cheesy punch inside.

Step 5: Bake to bubbly perfection

Transfer the mixture into a greased 9x13-inch dish. Sprinkle the remaining mozzarella and parmesan on top, cover with foil, and bake at 350°F for 25 minutes. Then remove the foil to let the cheese brown and bubble for another 10 minutes. Keep an eye so it doesn’t overbrown!

Top Tip

From making this casserole dozens of times, I’ve learned a few tricks to guarantee every bite is creamy and flavorful without getting soggy or bland.

Don’t overcook your pasta: Slightly under al dente means it finishes perfectly in the oven without turning mushy.
Use softened cream cheese: Let it sit at room temp before mixing; otherwise, you’ll end up with lumps in your sauce.
Season the chicken well: Even just a pinch of salt and pepper before cooking make a huge difference in flavor.
Cover the casserole while baking: Keeps moisture in so it stays creamy, then uncover for the last few minutes to get that golden cheesy crust.

How to Serve Creamy Chicken Alfredo Casserole Recipe

The image shows two white bowls on a white marbled surface, each filled with penne pasta and pieces of cooked chicken. The left bowl has just the plain pasta and chicken mixed together, showing yellow pasta with light brown chicken bits spread evenly. The right bowl has the same pasta and chicken base but is topped with two piles of cheese: one pile of light grated cheese on the left side and a pile of shredded white cheese on the right side. The bowls appear full and the pasta looks soft and cooked. Photo taken with an iphone --ar 2:3 --v 7

Garnishes

I always sprinkle fresh chopped parsley on top to add a pop of color and a little fresh herb brightness to cut through all that creamy cheese. If you want, some cracked black pepper or a dusting of extra parmesan works just as well.

Side Dishes

This casserole pairs beautifully with a crisp green salad or roasted veggies like asparagus or Brussels sprouts. Garlic bread or warm dinner rolls also make the perfect bread side to soak up any extra sauce — trust me, you don’t want to waste a drop!

Creative Ways to Present

For special occasions, I’ve layered this casserole in individual ramekins for a fancy single-serving look. Sometimes, I top with toasted breadcrumbs mixed with Parmesan for extra crunch—you’ll get those ooey-gooey bites but with a little crispy surprise.

Make Ahead and Storage

Storing Leftovers

I store leftover casserole covered tightly in the fridge for up to 3 days. The flavor actually deepens overnight, but the cheese might firm up a bit, so don’t worry — reheating brings back the creaminess.

Freezing

This casserole freezes well if you want to prep in advance. Freeze before baking in an airtight container or foil-covered dish, then bake right from frozen adding extra 10-15 minutes to cook time. It’s a great way to save time on busy nights.

Reheating

Reheat leftovers covered in the microwave or at 325°F in the oven until warmed through. Add a splash of milk or sprinkle some shredded cheese on top to refresh the creaminess and meltiness you love.

Frequently Asked Questions:

Can I use other types of pasta for this casserole?

Absolutely! While penne is great for holding sauce, rotini, rigatoni, or even fusilli work perfectly well. Just make sure to cook them al dente to avoid a mushy casserole.

Is it okay to substitute chicken breast with other proteins?

Yes, you can swap chicken breast for thighs, turkey, or even cooked sausage. Just adjust cooking time as darker meat may take longer to cook through. You can also go vegetarian by adding more veggies like mushrooms or spinach and omitting meat.

Can I make the sauce from scratch instead of using store-bought Alfredo?

Definitely! Homemade Alfredo sauce made with butter, heavy cream, and Parmesan cheese works beautifully here. It gives you control over flavors and richness, but using store-bought jars is a convenient shortcut that still tastes amazing.

How can I make this casserole creamier?

Make sure to use whole milk or even half-and-half. Don’t skip the cream cheese, as it thickens and enriches the sauce. Also, avoid overbaking—bake covered to retain moisture then uncover at the end just enough for a bubbly top.

Final Thoughts

This Creamy Chicken Alfredo Casserole Recipe has become my ultimate comfort food that I turn to when I want something creamy, cheesy, and satisfying but without complicated steps. I hope you enjoy making it as much as I do — it’s like a little homemade celebration in every forkful. Give it a try soon, and I promise it’ll become a family favorite at your table too!