Chicken Mac and Cheese Casserole – Comfort Food Made Easy
This is the kind of dinner that makes everyone linger at the table a little longer. Creamy, cheesy pasta meets tender chicken, all baked under a golden, crunchy topping. It’s easy enough for a weeknight, but cozy and crowd-pleasing enough for a Sunday dinner.
If you love mac and cheese and want something heartier, this casserole is the answer. Simple ingredients, big flavor, and a dish that reheats like a dream.
Ingredients
Method
- Preheat and prep: Heat the oven to 375°F (190°C). Grease a 9x13-inch baking dish.
- Cook the pasta: Boil in salted water until just shy of al dente. Drain and set aside. It will finish cooking in the oven.
- Sauté aromatics: In a large pot, melt 1 tablespoon butter over medium heat. Add onion and cook until soft, about 4–5 minutes. Stir in garlic for 30 seconds.
- Make the roux: Add remaining 3 tablespoons butter to the pot. Once melted, sprinkle in flour. Whisk and cook 1–2 minutes until it smells slightly nutty.
- Build the sauce: Slowly whisk in milk and then the chicken broth. Keep whisking to avoid lumps. Simmer 3–4 minutes until slightly thickened.
- Season: Stir in mustard, paprika, 1 teaspoon salt, and 1/2 teaspoon pepper. Taste and adjust. Add cream if using for extra richness.
- Add cheeses: Reduce heat to low. Stir in cheddar, Monterey Jack, and half the Parmesan until melted and smooth.
- Combine: Add cooked pasta and chicken to the sauce. Fold gently until everything is coated and evenly distributed.
- Transfer: Pour the mixture into the prepared baking dish. Smooth the top.
- Make the topping: In a bowl, mix bread crumbs, remaining Parmesan, olive oil, a pinch of salt, and a little black pepper. Melt the extra tablespoon of butter and stir it in. Sprinkle evenly over the casserole.
- Bake: Bake 20–25 minutes, until bubbling at the edges and the top is golden brown. For extra color, broil 1–2 minutes at the end. Watch closely.
- Rest and serve: Let it sit 5–10 minutes so the sauce sets slightly. Garnish with chopped parsley if you like. Serve warm.
What Makes This Recipe So Good
- Balanced texture: Creamy sauce, al dente pasta, and a crisp breadcrumb topping give every bite contrast.
- Family-friendly flavors: Mild, melty cheeses and well-seasoned chicken make it appealing to both kids and adults.
- Great for leftovers: The casserole sets up nicely overnight and reheats without losing creaminess.
- Flexible ingredients: Use rotisserie chicken, swap cheeses, or add veggies without messing up the base recipe.
- Make-ahead friendly: Assemble it earlier in the day, then bake when you’re ready to eat.
Shopping List
- Pasta: Elbow macaroni or small shells (12 ounces)
- Cooked chicken: 3 cups, shredded or diced (rotisserie works great)
- Butter: 4 tablespoons (plus 1 tablespoon for topping)
- All-purpose flour: 4 tablespoons
- Milk: 3 cups (whole milk preferred)
- Cream or half-and-half: 1/2 cup (optional for extra richness)
- Cheddar cheese: 2 cups, shredded
- Monterey Jack or mozzarella: 1 cup, shredded
- Parmesan: 1/2 cup, grated
- Chicken broth: 1/2 cup (low-sodium)
- Yellow onion: 1 small, finely chopped
- Garlic: 2–3 cloves, minced
- Mustard: 1 teaspoon Dijon or dry mustard
- Paprika: 1/2 teaspoon (smoked or sweet)
- Salt and black pepper: To taste
- Bread crumbs or panko: 1 cup
- Olive oil: 1 tablespoon (for topping)
- Parsley: Fresh, chopped (optional, for garnish)
Step-by-Step Instructions
- Preheat and prep: Heat the oven to 375°F (190°C). Grease a 9×13-inch baking dish.
- Cook the pasta: Boil in salted water until just shy of al dente.
Drain and set aside. It will finish cooking in the oven.
- Sauté aromatics: In a large pot, melt 1 tablespoon butter over medium heat. Add onion and cook until soft, about 4–5 minutes.
Stir in garlic for 30 seconds.
- Make the roux: Add remaining 3 tablespoons butter to the pot. Once melted, sprinkle in flour. Whisk and cook 1–2 minutes until it smells slightly nutty.
- Build the sauce: Slowly whisk in milk and then the chicken broth.
Keep whisking to avoid lumps. Simmer 3–4 minutes until slightly thickened.
- Season: Stir in mustard, paprika, 1 teaspoon salt, and 1/2 teaspoon pepper. Taste and adjust.
Add cream if using for extra richness.
- Add cheeses: Reduce heat to low. Stir in cheddar, Monterey Jack, and half the Parmesan until melted and smooth.
- Combine: Add cooked pasta and chicken to the sauce. Fold gently until everything is coated and evenly distributed.
- Transfer: Pour the mixture into the prepared baking dish.
Smooth the top.
- Make the topping: In a bowl, mix bread crumbs, remaining Parmesan, olive oil, a pinch of salt, and a little black pepper. Melt the extra tablespoon of butter and stir it in. Sprinkle evenly over the casserole.
- Bake: Bake 20–25 minutes, until bubbling at the edges and the top is golden brown.
For extra color, broil 1–2 minutes at the end. Watch closely.
- Rest and serve: Let it sit 5–10 minutes so the sauce sets slightly. Garnish with chopped parsley if you like.
Serve warm.
How to Store
- Refrigerate: Cool completely, then cover tightly. Store up to 4 days.
- Freeze: Wrap well in a freezer-safe container for up to 2 months. For best texture, freeze before baking.
Thaw in the fridge overnight.
- Reheat: Cover with foil and warm in a 325°F (165°C) oven until hot, about 20–25 minutes. Add a splash of milk if it looks dry. For single portions, microwave in 60–90 second bursts, stirring between intervals.
Health Benefits
- Protein from chicken: Helps keep you full and supports muscle maintenance.
- Calcium from dairy: Cheese and milk contribute to bone health.
- Portion flexibility: Pair with a big green salad or steamed veggies to balance the meal.
- Make it lighter: Use reduced-fat milk, part-skim cheeses, and whole-wheat pasta to add fiber and cut calories without losing comfort.
- Add vegetables: Broccoli, peas, or spinach boost vitamins and minerals with very little effort.
What Not to Do
- Don’t overcook the pasta: It should be firm when drained.
Overcooked pasta turns mushy after baking.
- Don’t skip seasoning: Taste the sauce before adding pasta. A pinch more salt or mustard can make a big difference.
- Don’t add cheese over high heat: High heat can cause the sauce to split and turn grainy. Melt it gently.
- Don’t overload with broth or milk: Too much liquid makes the casserole soupy.
Stick close to the measurements.
- Don’t bake uncovered for too long: If the topping browns too fast, cover loosely with foil to protect it while the center heats through.
Variations You Can Try
- Buffalo-style: Stir in 2–3 tablespoons buffalo sauce and a handful of crumbled blue cheese. Garnish with sliced green onions.
- Green veggie boost: Fold in 1–2 cups steamed broccoli florets, peas, or chopped spinach before baking.
- Bacon ranch: Add crisp chopped bacon, 2 teaspoons ranch seasoning, and swap Monterey Jack for pepper jack.
- Mushroom and thyme: Sauté sliced mushrooms with the onion and add 1 teaspoon fresh thyme leaves.
- Gluten-free: Use gluten-free pasta, a 1:1 gluten-free flour blend for the roux, and gluten-free panko.
- Spice it up: Add red pepper flakes or minced jalapeño, and choose smoked paprika for depth.
- Extra-crispy top: Mix crushed Ritz crackers or cornflakes with the bread crumbs for added crunch.
FAQ
Can I use rotisserie chicken?
Yes. Rotisserie chicken is perfect here.
Shred the meat and discard the skin, or chop it finely if you prefer smaller pieces.
What cheeses work best?
A blend is ideal. Cheddar gives flavor, Monterey Jack or mozzarella adds meltiness, and Parmesan sharpens the finish. Avoid only pre-shredded cheese if possible, since anti-caking agents can affect melting.
How do I keep the sauce from getting grainy?
Make a smooth roux, add milk gradually while whisking, and melt the cheese over low heat.
If the sauce starts to simmer hard, lower the heat before adding cheese.
Can I make this ahead?
Yes. Assemble up to the breadcrumb step, cover, and refrigerate up to 24 hours. Add 5–10 extra minutes to the bake time and watch the topping so it doesn’t over-brown.
What pasta shape should I use?
Elbows, small shells, or cavatappi all work.
Choose something with curves or ridges to hold the sauce.
How can I make it lighter?
Use 2% milk, reduce the butter by 1 tablespoon, and swap half the cheddar for part-skim mozzarella. Add vegetables to increase volume and fiber.
Why is my casserole watery?
Pasta may have been under-drained or the sauce too thin. Cook the sauce until it lightly coats a spoon, and drain pasta well before combining.
Can I use leftover turkey instead of chicken?
Absolutely.
Turkey swaps in seamlessly. Just taste and adjust seasoning since turkey can be a bit milder.
Final Thoughts
Chicken Mac and Cheese Casserole is the kind of meal you keep in your back pocket. It’s cozy, flexible, and always welcome at the table.
With a reliable cheese sauce and a crisp topping, it turns simple ingredients into something special. Make it your own with a few add-ins, and enjoy the leftovers just as much the next day. This is comfort cooking without the fuss.
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