Creamy Chicken Egg Noodle Casserole in 45 Minutes

This egg noodle casserole is the kind of dinner that quiets a hungry kitchen on a Tuesday. Tender noodles, shredded chicken, and peas sit in a rich homemade sauce, with a crispy panko and Parmesan top that gets golden under the broiler.

Use a rotisserie chicken and frozen peas, and you can have it in the oven with under 15 minutes of real work. It’s warm, filling, and exactly what you want when the calendar has no room for fuss.

Why This One Stays on the Dinner Rotation

The sauce is the reason I keep coming back. A quick roux with butter, onion, and garlic builds deep savoriness, and a little sour cream at the end brings a gentle tang that keeps the whole thing from tasting heavy.

That crunchy topping does a lot of work too. Panko tossed with melted butter and Parmesan turns into a shattery golden crust in the oven, so every forkful has soft noodles and a crisp bite. No one ever complains about leftovers either, it reheats like a champ.

Ingredients

• 12 oz wide egg noodles: extra-wide hold the sauce well, but any width works.
• 2 tbsp unsalted butter, for the sauce: salted is fine, just scale back the added salt.
• 1 small yellow onion, finely diced: about ¾ cup after chopping.
• 2 garlic cloves, minced: fresh gives the brightest savory note.
• ¼ cup all-purpose flour: thickens the sauce without heaviness.
• 2 cups whole milk: 2% works too, but the sauce will be slightly thinner.
• 1 cup low-sodium chicken broth: use homemade or a good boxed broth.
• 1 tsp kosher salt: or ½ tsp fine sea salt.
• ½ tsp black pepper: add more to taste after baking.
• 2 cups cooked shredded chicken: rotisserie chicken is a lifesaver here.
• 1 cup frozen peas: no need to thaw them.
• 1 cup shredded sharp cheddar cheese: freshly grated melts smoothest.
• ½ cup sour cream: full-fat gives the best tang and body.
• ½ cup panko breadcrumbs: they stay way crispier than regular breadcrumbs.
• 2 tbsp melted butter, for the topping: unsalted so you control the saltiness.
• ¼ cup grated Parmesan cheese: the nutty saltiness finishes the top.

Variations / Substitutions

• Swap the chicken: leftover turkey or a drained can of tuna (two 5 oz cans) slips right in with no other changes.
• Add more veg: a cup of sautéed sliced mushrooms folded in with the chicken adds earthiness, or stir in a handful of baby spinach off heat.
• Skip the sour cream: use an equal amount of plain Greek yogurt for the same tang.
• Go dairy-free: use unsweetened oat milk and a dairy-free cheddar-style shred, then skip the Parmesan and use extra panko; the topping will still crisp.

Chicken Noodle Soup goes perfectly with this casserole for a cozy meal.

How to Make Creamy Chicken Egg Noodle Casserole

Step 1: Boil the Egg Noodles

Bring a large pot of salted water to a boil over high heat. Add the 12 oz egg noodles and cook until they’re just tender but still have a slight chew, about 6 minutes. You want them a little underdone because they’ll soak up sauce in the oven.

Drain the noodles and give them a quick rinse with cold water to stop the cooking. Set them aside in the colander while you start the sauce.

Step 2: Sauté the Aromatics

Set your oven to 375°F (190°C) and grab a large skillet. Melt the 2 tbsp butter for the sauce over medium heat, then toss in the diced onion and a pinch of the salt. Cook, stirring now and then, for about 5 minutes, until the onion turns translucent and soft. Add the minced garlic and cook 30 seconds more, just until it smells fragrant.

That quick garlic bloom builds a savory base that makes the sauce taste like it simmered all afternoon. Kill the heat if the garlic starts to brown at all.

Step 3: Build the Creamy Sauce

Sprinkle the ¼ cup flour over the onion and garlic and stir constantly for 1 minute. This cooks out the raw flour taste. Slowly pour in the 2 cups milk and 1 cup broth while you whisk. Keep whisking as it comes up to a gentle simmer, about 3 to 4 minutes, and you’ll feel it thicken enough to coat a spoon.

Once it bubbles lightly, turn off the heat and stir in the 1 tsp salt, ½ tsp pepper, the shredded cheddar, and the ½ cup sour cream. Everything should melt into a smooth, pale gold sauce. Taste it now and adjust the salt, because the noodles and peas haven’t been seasoned yet.

Step 4: Layer the Casserole

Tip the cooked noodles, shredded chicken, and frozen peas straight into the skillet with the sauce. Fold everything together with a big spoon until every noodle is coated. Grease a 9×13 baking dish with a little butter or spray, then scrape the whole mixture into the dish and spread it even.

In a small bowl, stir the ½ cup panko with the 2 tbsp melted butter and the grated Parmesan. Scatter this over the top in an even layer. The panko will toast as it bakes and lock in all that moisture underneath.

Step 5: Bake and Serve

Slide the dish into the hot oven and bake for 25 minutes, until the edges are bubbling. Then switch the broiler to high and let the top crisp for 2 to 3 minutes, watching it the whole time so it turns golden and not burnt.

Pull it out and let it rest on the stovetop for 5 minutes. The sauce will settle and thicken just enough. Carry the whole dish to the table and scoop generous portions onto plates, catching a bit of that crunchy top with every serve.

A Few Notes Before You Start

• Rotisserie chicken is already seasoned, so taste the sauce before you add all the salt. Undersalted is easier to fix at the table.
• Frozen peas go in straight from the freezer and warm through perfectly in the oven.
• If your casserole dish is deeper and smaller (like an 8×8), the mixture will be thicker and may need an extra 5 to 7 minutes of bake time. You’ll know it’s ready when the edges bubble hard.
• Don’t skip the broil step, it takes the topping from soft crumbs to shattery crispness in a couple of minutes.

Bake time by dish:

Storing and Reheating Leftovers

• Refrigerate: Cover the dish tightly and keep it in the fridge for up to 4 days. The topping softens a little, but it still tastes great.
• Reheating: Warm individual portions in the microwave until hot, about 2 minutes, or put the whole dish back in a 350°F oven for 15 to 20 minutes. Run it under the broiler for a minute to recrisp the top if you want.
• Freeze: Assemble the casserole without the panko topping, wrap it tightly, and freeze for up to 2 months. Thaw overnight in the fridge, add the fresh panko mixture, and bake as directed, adding 10 extra minutes to the bake time.

What to Serve With This Casserole

A simple green salad with a sharp vinaigrette cuts through the richness of the sauce, so something like arugula with lemon juice and olive oil is a fast side. Steamed broccoli or roasted green beans add a nice clean crunch and a bit of freshness next to the creamy noodles. If you want bread, a crusty baguette for sopping up any leftover sauce never hurts.

Frequently Asked Questions

Can I use canned soup instead of making the sauce from scratch?

Yes, if you’re in a rush, swap the flour, milk, broth, and cheddar for two 10.5 oz cans of cream of mushroom or cream of chicken soup mixed with ½ cup milk. The flavor will be milder, so taste and add extra black pepper or a pinch of dried thyme.

Can I assemble this ahead of time?

Yes, you can put it together (without the panko topping) up to 24 hours ahead and keep it covered in the fridge. When you’re ready to bake, add the fresh panko mixture on top and let it sit at room temperature while the oven preheats, then bake as directed.

Can I freeze the baked casserole?

You can, but the sauce may separate slightly after thawing. For the best texture, freeze it unbaked as described in the storage section. If you do freeze leftovers, reheat them slowly in the oven and stir gently before serving.

What can I use instead of egg noodles?

Any wide pasta works, farfalle or pappardelle hold the sauce nicely. Cook them a minute shy of the package time so they don’t turn mushy in the oven.

Creamy Chicken Egg Noodle Casserole Recipe

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 30 minutes mins

Total Time 45 minutes mins

Servings: 6 servings

Calories: 528

Ingredients Method Notes

Ingredients

  

• 12 oz wide egg noodles
• 2 tbsp unsalted butter
• 1 small yellow onion, finely diced
• 2 garlic cloves, minced
• ¼ cup all-purpose flour
• 2 cups whole milk
• 1 cup low-sodium chicken broth
• 1 tsp kosher salt
• ½ tsp black pepper
• 2 cups cooked shredded chicken
• 1 cup frozen peas
• 1 cup shredded sharp cheddar cheese
• ½ cup sour cream
• ½ cup panko breadcrumbs
• 2 tbsp melted butter
• ¼ cup grated Parmesan cheese

Method

 

1. Boil the egg noodles in salted water until just tender, about 6 minutes, then drain and rinse with cold water.
2. Sauté the onion in 2 tbsp butter over medium heat until soft, 5 minutes, then add the garlic and cook 30 seconds.
3. Stir in the flour and cook 1 minute, then whisk in the milk and broth and simmer until thickened, 3 to 4 minutes. Off heat, stir in salt, pepper, cheddar, and sour cream until smooth.
4. Fold the noodles, chicken, and frozen peas into the sauce, transfer to a greased 9×13 dish, and top with panko mixed with melted butter and Parmesan.
5. Bake at 375°F for 25 minutes, then broil 2 to 3 minutes until the top is golden. Let rest 5 minutes before scooping into bowls.

Notes

Rotisserie chicken has a lot of built-in salt, so taste the sauce before adding the full amount. If you’re using cooked chicken breast that was unseasoned, you may need an extra ¼ tsp of salt. The dish needs a 5-minute rest after baking so the sauce sets up enough to serve nicely.