Easy Chicken Alfredo Casserole: A Creamy, Comforting Dinner
Looking for a simple, satisfying dinner that the whole family will love? This easy chicken Alfredo casserole brings together tender chicken, pasta, and a rich, creamy Alfredo sauce, all baked under a layer of melted cheese. It’s the kind of cozy, no-fuss meal that’s perfect for busy weeknights, potlucks, or whenever you’re craving comfort food.
Best of all? It uses simple ingredients, comes together quickly, and can even be prepped ahead of time.
Why You’ll Love This Chicken Alfredo Casserole
There are plenty of reasons this casserole will become a favorite in your dinner rotation:
✅ Creamy, cheesy, and satisfying the ultimate comfort food
✅ Family-friendly even picky eaters will love it
✅ Simple pantry ingredients nothing fancy required
✅ Great for leftovers it reheats beautifully
✅ Customizable easy to add veggies or switch up the pasta

Ingredients You’ll Need
You can likely pull this together with what’s already in your fridge and pantry:
For the casserole:
- 3 cups cooked chicken (shredded or diced; rotisserie works great)
- 12 oz pasta (penne, rotini, or fettuccine work well)
- 3 cups Alfredo sauce (homemade or store-bought)
- 1 ½ cups shredded mozzarella cheese
- ½ cup grated Parmesan cheese
- 1 teaspoon garlic powder
- 1 teaspoon Italian seasoning
- Salt and pepper to taste
Optional additions:
- 1 cup steamed broccoli florets
- 1 cup sautéed mushrooms
- ½ cup baby spinach

How to Make Easy Chicken Alfredo Casserole
1️⃣ Preheat the oven to 350°F (175°C). Grease a 9×13-inch baking dish.
2️⃣ Cook the pasta in salted water according to package directions, but stop 1–2 minutes before fully al dente it will finish cooking in the oven. Drain.
3️⃣ Mix the casserole filling: In a large bowl, combine the cooked pasta, chicken, Alfredo sauce, garlic powder, Italian seasoning, salt, and pepper. If you’re adding veggies, fold them in now.
4️⃣ Assemble the casserole: Pour the mixture into the prepared baking dish. Sprinkle the mozzarella and Parmesan evenly over the top.
5️⃣ Bake uncovered for 25–30 minutes, until the cheese is melted and bubbly and the top is golden.
6️⃣ Let it rest for 5 minutes before serving to allow the sauce to thicken slightly.

Tips for the Best Chicken Alfredo Casserole
💡 Use rotisserie chicken to save time and add extra flavor.
💡 Undercook your pasta slightly so it doesn’t get mushy during baking.
💡 Add a veggie like broccoli or spinach to make it a one-dish meal.
💡 For extra richness, stir in ¼ cup of cream cheese or a splash of heavy cream.
💡 Top with fresh parsley for color and a burst of freshness.

Make-Ahead and Storage
📌 Make-ahead: Assemble the casserole (without baking) up to 24 hours in advance. Cover tightly and refrigerate. When ready to bake, let it sit at room temperature for 15–20 minutes and add 5–10 minutes to the bake time.
📌 Storage: Leftovers keep in the fridge for up to 4 days. Reheat in the oven covered with foil at 350°F, or microwave individual portions.
📌 Freezing: This casserole freezes well. Wrap tightly and freeze unbaked for up to 2 months. Thaw overnight in the fridge before baking.

Variations to Try
🌟 Chicken Alfredo and Broccoli Casserole stir in steamed broccoli for a veggie boost.
🌟 Spicy Alfredo Casserole add a pinch of red pepper flakes or diced jalapeños for a kick.
🌟 Chicken Alfredo Bake with Bacon sprinkle cooked, crumbled bacon over the cheese before baking.
🌟 Low-carb option swap pasta for cooked spaghetti squash or zucchini noodles.

What to Serve With Chicken Alfredo Casserole
This creamy dish pairs perfectly with:
🥗 A fresh green salad with a light vinaigrette
🥖 Garlic bread or crusty rolls
🥦 Roasted or steamed veggies like asparagus or green beans

Final Thoughts
This easy chicken Alfredo casserole is everything a comfort food casserole should be rich, creamy, cheesy, and oh-so-satisfying. Whether you make it as a weeknight dinner, meal prep, or for a potluck, it’s guaranteed to be a hit. Plus, it’s flexible enough to adapt to what you have on hand a great go-to recipe for busy cooks.
Give it a try, and enjoy every creamy, cheesy bite!
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