Chicken Alfredo Bake
Recipe Tested & Approved by Mia Hartwell
Every recipe is developed, cooked, and tested by Mia in a real home kitchen using everyday ingredients to ensure reliable, repeatable results.
Penne and tender chicken folded into a homemade Alfredo sauce, topped with mozzarella and baked until bubbling and golden. Comfort-food casserole at its best.
By Mia HartwellUpdated March 5, 2026
Developed using tested cooking methods — cook to the temperatures given and adjust times to your equipment.
Why you'll love this recipe
- A crowd-pleasing casserole that feeds six
- Real Alfredo sauce made from scratch — no jar required
- Make-ahead friendly for busy weeknights
- Gooey mozzarella top over creamy, chicken-studded pasta
Chicken Alfredo Bake
45 min totalServes 6
Nutrition (per serving)
Values are estimates. See our disclaimer for details.
- Calories
- 620kcal
- Protein
- 40g
- Carbs
- 52g
- Fat
- 28g
- Fiber
- 3g
- Sugar
- 4g
Step-by-Step Instructions
- 1
Preheat the oven to 375°F (190°C) and grease a 9x13-inch baking dish. Cook the penne 1 minute short of al dente, then drain.
- 2
Season the chicken with salt and pepper. Heat the olive oil in a skillet over medium-high and cook the chicken until golden and at 165°F (74°C), about 6-7 minutes. Set aside.
- 3
In the same pan, melt the butter and cook the garlic for 1 minute. Pour in the heavy cream and bring to a gentle simmer.
- 4
Whisk in the Parmesan and nutmeg until smooth, then season with salt and pepper.
- 5
Combine the pasta, chicken, and Alfredo sauce in the baking dish and toss to coat.
- 6
Top with the mozzarella and bake for 20-25 minutes until bubbling and the cheese is golden in spots.
- 7
Rest for 5 minutes, scatter with parsley, and serve.
Pro Tips for the Best Results
- Boil the pasta just shy of al dente; it absorbs sauce and softens further as it bakes.
- Make the sauce a little loose — it thickens in the oven, and a too-thick sauce turns the bake dry.
- Freshly grated Parmesan melts smoothly; pre-grated cheese can leave the sauce grainy.
- Let the bake rest 5 minutes so the sauce sets enough to scoop cleanly.
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How to Cook Chicken Alfredo Bake
New to this dish? Follow along with the detailed guide below — we break down each stage so you get perfect results the very first time.
Pre-cook the components
Because this dish bakes, every element needs to be slightly underdone going in. Boil the penne a minute short of al dente so it doesn't turn to mush, and sear the chicken just to 165°F (74°C) — it will warm through again in the oven. Searing also builds flavor in the pan that carries into the sauce.
Make a smooth Alfredo
Alfredo is just butter, garlic, cream, and Parmesan, but technique matters. Cook the garlic gently, simmer the cream rather than boiling it, and whisk in freshly grated Parmesan off the hardest heat so it melts into a silky sauce instead of clumping. Keep it slightly loose, since pasta and the oven will both drink up moisture.
Assemble and bake
Toss the pasta, chicken, and sauce together so every piece is coated, then blanket it with mozzarella. Bake at 375°F until the edges bubble and the cheese is golden in spots, about 20-25 minutes. A five-minute rest lets the sauce set so each scoop holds together on the plate.
Storage & Make-Ahead
Cover and refrigerate leftovers for up to 4 days. Reheat individual portions with a splash of milk to revive the sauce. The unbaked casserole can be frozen for up to 2 months; thaw overnight before baking.
Serving Suggestions
This chicken alfredo bake pairs beautifully with a crisp green salad, crusty bread, or your favorite grain. Add a simple side of roasted vegetables for a complete, satisfying dinner the whole family will enjoy.
Frequently Asked Questions
Can I assemble it ahead of time?+
Yes. Assemble (without baking), cover, and refrigerate up to 24 hours. Add about 10 minutes to the bake time since it starts cold.
Can I use rotisserie chicken?+
Definitely — about 3 cups of shredded cooked chicken works and skips the searing step.
Why did my sauce turn grainy?+
Usually from boiling the cream too hard or using pre-shredded cheese. Keep the sauce at a gentle simmer and use freshly grated Parmesan.
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