
This hearty chicken Alfredo casserole transforms an indulgent creamy pasta into a warm family meal that can feed a crowd. We've cut out unnecessary extras and gone with lighter alternatives so you'll enjoy all that wonderful Alfredo flavor with fewer calories.
I created this dish during an incredibly busy period when I needed something that would stretch across several evenings. My family absolutely loved how creamy and delicious it was, and now they want it included at least twice per month in our regular dinner rotation.
Ingredients
- Whole wheat pasta: Offers more nutrients and fiber than regular pasta while maintaining that perfect baked texture
- Fresh garlic: Delivers essential flavor that powdered versions just can't match
- Milk and chicken broth: Form the base of our sauce, eliminating the need for heavy cream
- Greek yogurt: Adds creaminess with a slight zing plus boosts protein content
- Freshly grated Parmesan cheese: Must be included for proper melting and authentic taste
- Shredded chicken: Makes this a complete protein-packed meal
- Provolone or mozzarella cheese: Forms that irresistible gooey layer on top
Step-by-Step Instructions
- Prepare the pasta:
- Cook your pasta until just al dente according to package directions. This step is crucial because it'll continue cooking in the oven, and soggy pasta ruins everything. After draining, return it to the pot to save on cleanup.
- Create the roux:
- In a large skillet over medium heat, melt butter, then add flour and whisk constantly for one minute. This ensures your sauce thickens without any raw flour taste. Add minced garlic and cook for 30 seconds until fragrant but not browned.
- Build the sauce:
- Lower the heat and gradually pour in milk and chicken broth while whisking continuously to prevent lumps. This gradual addition is key for a silky sauce. Add all seasonings and let it simmer gently, stirring frequently until thickened, around 8-10 minutes. You'll know it's done when the sauce coats the back of a spoon.
- Enrich the sauce:
- Remove from heat and stir in Parmesan until completely dissolved. Allow it to cool slightly for about a minute before incorporating the Greek yogurt. This brief cooling prevents the yogurt from separating and keeps your sauce velvety smooth.
- Assemble the casserole:
- Combine the chicken and sauce with your pasta, making sure everything gets coated. Transfer half to your baking dish, add a layer with half the cheese, pour in remaining pasta mixture, then top with the rest of the cheese for that perfect melty finish.
- Bake to perfection:
- Bake at 375°F for 15-20 minutes until bubbling with golden cheese on top. Let it rest 5 minutes before serving so the sauce can set up and won't spill all over your plate.

Greek yogurt is my secret weapon in this recipe. I stumbled upon it by accident when I was out of heavy cream one evening and needed a substitute. It not only adds protein but brings a subtle tanginess that perfectly balances the richness.
Ideal Pasta Selections
Your pasta selection really matters in this bake. Shapes with ridges or hollows such as cavatappi, ziti, or fusilli will capture more sauce in every mouthful. They also create small pockets where cheese can melt into, giving you flavor throughout. Skip long noodles like spaghetti or linguine, as they don't work nearly as well in casseroles.
Prep Ahead Strategies
This chicken Alfredo bake is perfect for hectic weeknights because you can break it down into stages. Cook and shred your chicken up to 3 days in advance and store it in the fridge. You can also assemble the entire dish a day before, cover tightly with foil, and refrigerate. When ready to bake, let it stand at room temperature for 30 minutes, then add roughly 10 extra minutes of baking time since it'll start off cold.
Customization Options
This dish adapts easily to whatever ingredients you have on hand. Toss in vegetables like sautéed mushrooms, broccoli, or spinach for added nutrition. If you prefer seafood, replace chicken with cooked shrimp – just add them at the last minute before baking to avoid overcooking. For special occasions, try using half milk and half cream or switch Greek yogurt for cream cheese to create an even more luxurious version.

Serving Suggestions
This Alfredo bake pairs wonderfully with a simple green salad dressed with lemon vinaigrette to cut through the richness. For a complete meal, serve alongside roasted vegetables like asparagus or Brussels sprouts. Garlic bread works fantastically for mopping up extra sauce, though the dish stands perfectly well on its own. If you want a drink pairing, go for a crisp Pinot Grigio or unoaked Chardonnay to complement the creamy flavors.
Common Questions
- → Can I use another pasta type?
Absolutely! Switch to whatever pasta works for you—gluten-free options, standard varieties, or chunkier shapes like bow ties or shells all work great.
- → How do I keep the sauce smooth?
Go with low-fat Greek yogurt, let your sauce cool slightly before adding the yogurt, and don't crank up the heat after they're mixed.
- → Is it okay to use pre-shredded cheese?
You'll get better results grating cheese yourself. The stuff in bags often contains anti-caking agents that can make your dish grainy and weird when melted.
- → What's the best way to reheat or store leftovers?
Pop leftovers in a sealed container and keep in the fridge up to 4 days. Warm them in your microwave or in a 350°F oven until hot throughout. For longer storage, wrap tightly and freeze up to 3 months.
- → What side dishes go well?
This goes great with some crusty bread, steamed veggies, or a crisp green salad to complete your meal.
- → Can I skip the chicken for veggies?
You bet! Swap in some sautéed mushrooms, wilted spinach, or any veggies you love for a meat-free version.