Creamy Chicken Alfredo Bake

The first snowstorm of the season had us all housebound and craving something that felt like a warm hug. I raided the fridge and found leftover rotisserie chicken, a half-empty bag of mozzarella, and cream that needed using. That accidental dinner became the most requested casserole in our house ever since.

My sister-in-law stayed over during a particularly rough week last winter, and I made this without really thinking about it. She sat at the counter watching me grate cheese and asked for the recipe before she even took a bite. Now she makes it for her family every Sunday.

Ingredients

• 2 cups cooked chicken breast: Rotisserie chicken works beautifully here and saves so much time
• 12 oz penne or rigatoni pasta: These shapes hold onto the sauce perfectly and stand up to baking
• 2 tablespoons unsalted butter: The foundation for that rich garlic sauce we are building
• 3 cloves garlic, minced: Fresh garlic makes all the difference do not use the jarred stuff
• 2 cups heavy cream: This creates that velvety restaurant-style texture
• 1 cup whole milk: Lightens things up just enough without sacrificing creaminess
• 1 ¼ cups freshly grated Parmesan cheese: Buy a block and grate it yourself for way better melting
• ½ teaspoon salt: Start here and adjust to your taste later
• ¼ teaspoon black pepper: Freshly cracked gives the best aroma
• ¼ teaspoon ground nutmeg: The secret ingredient that makes this taste professionally made
• 2 cups shredded mozzarella cheese: Low moisture part skim melts into the best bubbly crust
• ¼ cup grated Parmesan cheese: Adds that salty bite to the topping
• 2 tablespoons chopped fresh parsley: Brings a bright pop of color and fresh flavor

Instructions

Preheat your oven to 375°F and grease a 9x13 baking dish:

Butter the dish thoroughly so none of that precious cheese sticks to the bottom

Cook the pasta until al dente:

It will cook more in the oven so do not overdo it now and drain well

Melt the butter in a large skillet over medium heat:

Add the garlic and let it sizzle for just one minute until fragrant but not brown

Pour in the cream and milk and bring to a gentle simmer:

Whisk in the Parmesan salt pepper and nutmeg until everything melts into silky smoothness

Add the chicken and pasta to the sauce:

Toss everything together until every piece of pasta is coated in that gorgeous sauce

Transfer the mixture to your baking dish:

Spread it evenly so every serving gets plenty of sauce

Sprinkle the mozzarella and Parmesan over the top:

Cover the entire surface so you get that golden cheesy crust across every bite

Bake for 20 to 25 minutes:

Watch for the cheese to turn golden and start bubbling around the edges

Optional broil for 2 to 3 minutes:

Stay right by the oven because it goes from perfectly golden to burnt fast

Let it rest for 5 minutes:

This helps the sauce set slightly so it does not run all over the plate

Save Pin

This dish showed up at every family gathering last year and somehow always disappeared first. My dad actually asked me to make it for his birthday instead of a cake.

Making It Ahead

You can assemble the entire casserole up to a day before baking and keep it covered in the refrigerator. Add about ten minutes to the baking time if you are baking it cold from the fridge.

Freezing Instructions

Wrap the unbaked casserole tightly with plastic wrap and then foil. It will keep for up to three months and you can bake it straight from frozen just add about twenty minutes.

Serving Suggestions

A crisp green salad with vinaigrette cuts through the richness perfectly. Simple roasted broccoli or garlic bread also work wonderfully alongside.

• Steamed peas or broccoli folded into the pasta add great color and nutrition
• A glass of chilled white wine like Pinot Grigio balances the creaminess
• Leftovers reheat surprisingly well in the microwave for lunch the next day

Save Pin

There is something so deeply satisfying about pulling this bubbling golden beauty out of the oven. It is comfort food at its absolute finest.

Recipe FAQs

→ What pasta shapes work best?

Penne or rigatoni are ideal because their tubes hold the sauce. Short twists like cavatappi or shells also trap the sauce nicely; cook just to al dente so they finish perfectly in the oven.

→ How do I keep the Alfredo sauce smooth and stable?

Simmer gently rather than boiling, add cheese off the heat or over very low heat, and stir constantly as it melts. Using room-temperature cream and adding cheese gradually helps prevent separation.

→ Can I make this ahead or freeze it?

Assemble and refrigerate up to 24 hours before baking for easy meal prep. For freezing, bake once or freeze unbaked in an airtight container for up to a month; thaw overnight and extend bake time as needed.

→ How can I lighten the dish?

Swap half the cream for milk or use half-and-half, reduce the cheese amount slightly, and add steamed broccoli or peas to stretch the dish with vegetables and lighten each bite.

→ How do I get a bubbly, golden mozzarella crust?

Use shredded mozzarella (not pre-sliced), sprinkle with a little extra grated Parmesan for color, bake until bubbling and then broil 1–2 minutes while watching closely to achieve a golden finish.

→ What proteins can substitute for the chicken?

Rotisserie or smoked chicken work well for convenience and flavor. Shredded turkey or diced ham can also be used depending on what you have on hand.