Hello, beautiful people! Today I’m sharing one of my absolute favorite comfort food recipes that never fails to bring warmth to my kitchen and smiles to my table. Chicken Tetrazzini is that beautiful marriage of tender chicken, perfectly cooked pasta, and the most luxurious creamy sauce you can imagine, all topped with golden, bubbling cheese. This is the kind of dish that makes weeknight dinners feel special and turns leftovers into something extraordinary.
I first fell in love with this classic American-Italian casserole when a dear friend served it at a potluck years ago. Since then, I’ve tweaked and perfected my version, and it’s become my go-to recipe when I need something that’s both elegant enough for guests and comforting enough for a cozy family dinner. The best part? It comes together easier than you might think!
Why You’ll Love This Recipe
Let me tell you why this Chicken Tetrazzini has earned its permanent place in my recipe rotation. First, it’s incredibly versatile – I’ve made this with leftover roasted chicken, rotisserie chicken from the store, and even turkey after Thanksgiving. It welcomes whatever you have on hand with open arms.
The texture is absolutely divine. You get that wonderful contrast between the creamy sauce, tender pasta, and crispy, cheesy top. Every forkful is different, and every forkful is delicious. And can we talk about that sauce for a moment? It’s rich and velvety with just the right amount of mushroom earthiness and a subtle hint of sherry that adds such sophisticated depth.
This recipe also happens to be a wonderful make-ahead dish. I often assemble it in the morning or even the night before, then just pop it in the oven when I’m ready to eat. It’s perfect for busy schedules, potlucks, or when you’re feeding a crowd. Plus, it reheats beautifully, so leftovers are just as good as the first serving.
One more thing I absolutely love – this recipe is forgiving. New to cooking casseroles? This is a great place to start. The measurements don’t need to be precise to the gram, and you can adjust seasonings to your taste as you go.
Ingredients
Before we dive into making this gorgeous dish, let’s talk about what you’ll need. I always recommend gathering everything before you start cooking – it makes the whole process so much smoother!
For the pasta and chicken, you’ll need spaghetti or linguine (I prefer spaghetti because it holds the sauce so well) and cooked chicken. The mushrooms add wonderful umami depth – I use a combination of white button mushrooms and cremini when I can find them. The aromatics – onion and garlic – build that flavor foundation we’re looking for.
The sauce is where the magic happens. Butter and flour create our roux, then we add chicken broth for savory depth, heavy cream for richness, and dry sherry for that classic Tetrazzini flavor. If you’re not comfortable using sherry, I’ll share an alternative in the tips section.
For the cheese, I use a combination of Parmesan for its sharp, nutty flavor and mozzarella for that gorgeous melt and stretch. And don’t forget the seasonings – salt, pepper, and a touch of nutmeg really bring everything together.
Step-by-Step Instructions
Now for the fun part – let’s get cooking! I promise this is much easier than it might seem. Just take it step by step, and you’ll have a stunning casserole ready to go.
Start with the pasta: Bring a large pot of salted water to a boil. I’m generous with the salt – the water should taste like the sea. Cook your spaghetti until it’s just shy of al dente, about 2 minutes less than the package directions. Remember, it’s going to cook more in the oven, so we want to undercook it slightly. Drain and set aside.
Prepare your ingredients: While the pasta cooks, slice your mushrooms, dice your onion, and mince your garlic. If you’re using raw chicken, season it with salt and pepper and cook it now in a large skillet until it’s cooked through. Let it cool slightly, then dice or shred it. I usually use rotisserie chicken to save time, and I absolutely don’t apologize for that!
Sauté the vegetables: In a large, deep skillet or Dutch oven, melt 4 tablespoons of butter over medium heat. Add the mushrooms and cook them for about 5-7 minutes, stirring occasionally. You want them to release their moisture and turn golden brown. This concentrates their flavor beautifully. Add the diced onion and cook for another 3-4 minutes until softened. Stir in the garlic and cook for just 30 seconds – just until fragrant.
Make the roux: Push the vegetables to the sides of the pan and add the remaining 4 tablespoons of butter to the center. Let it melt, then sprinkle the flour over it. Stir constantly for about 2 minutes. This cooks out the raw flour taste and creates the base for our creamy sauce.
Create the sauce: Gradually pour in the chicken broth, stirring constantly to prevent lumps. It might look a bit clumpy at first, but keep stirring – it’ll smooth out! Once the broth is incorporated, add the heavy cream and sherry. Bring everything to a gentle simmer and let it cook for about 5 minutes, stirring frequently. The sauce will thicken beautifully. Season with salt, pepper, and just a pinch of nutmeg. That nutmeg is my secret ingredient – it adds such wonderful warmth without being identifiable.
Combine everything: Remove the pan from heat and stir in half of the Parmesan cheese. Add the cooked pasta and chicken to the sauce, tossing everything together until it’s beautifully coated. Taste and adjust the seasonings if needed. This is your chance to make it perfect for your palate!
Assemble the casserole: Preheat your oven to 350°F (175°C). Transfer the pasta mixture to a greased 9×13-inch baking dish. Spread it out evenly – this ensures even cooking and maximum crispy edges. Sprinkle the remaining Parmesan and the mozzarella cheese over the top. I like to go right to the edges so every bite has that delicious golden crust.
Bake to perfection: Bake for 25-30 minutes, until the casserole is bubbling around the edges and the cheese on top is melted and golden brown. If you want an extra-crispy top (and who doesn’t?), run it under the broiler for the last 2-3 minutes, watching carefully so it doesn’t burn.
Rest and serve: This is important – let the casserole rest for about 5-10 minutes before serving. I know it’s tempting to dig right in, but this resting time lets the sauce thicken up just a bit more and makes serving so much neater.
Tips for the Best Chicken Tetrazzini
After making this recipe countless times, I’ve picked up a few tricks that really make a difference. First, don’t skip undercooking the pasta. Mushy pasta in a casserole is such a disappointment, and this simple step prevents it completely.
When it comes to the sherry, I know not everyone keeps it in their kitchen. If you’d rather not use it, you can substitute with an equal amount of dry white wine, or simply use additional chicken broth with a splash of lemon juice for brightness. The sherry does add a special something, though, so if you’re comfortable with it, I highly recommend trying it.
For the creamiest results, use full-fat ingredients. I’ve tried making this with half-and-half instead of heavy cream, and while it’s still good, it’s just not quite as luxurious. Sometimes it’s worth the splurge!
Here’s a make-ahead tip I use all the time: assemble the entire casserole up to the point of baking, cover it tightly with plastic wrap and then foil, and refrigerate for up to 24 hours. When you’re ready to cook, remove it from the fridge while the oven preheats (about 30 minutes) to take the chill off, then bake as directed, adding maybe 5-10 minutes to the baking time.
You can also freeze this! Assemble it in a freezer-safe dish, wrap it well, and freeze for up to 3 months. Thaw overnight in the refrigerator before baking. It’s like having a homemade frozen dinner, but a million times better.
Want to add some vegetables? I sometimes stir in frozen peas or blanched broccoli florets. Just make sure any vegetables you add are already cooked or will cook through in the oven time.
Kitchen Gear for This Recipe
- Instant-Read Meat Thermometer
- Enameled Cast Iron Dutch Oven
- Heavy-Duty Sheet Pan Set
- Glass Mixing Bowl Set
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Frequently Asked Questions
Can I use a different type of pasta? Absolutely! While spaghetti is traditional, I’ve successfully made this with linguine, fettuccine, or even penne. Just stick with something that will hold the sauce well.
Is there a substitute for heavy cream? You can use half-and-half, though the sauce won’t be quite as rich. For a lighter version, I’ve used whole milk thickened with a bit of extra flour, though I’ll be honest – it’s not quite the same indulgent experience.
Can I make this without sherry? Yes! Use dry white wine, or omit it entirely and add a squeeze of lemon juice at the end for brightness. The dish will still be delicious, just slightly different in flavor.
How do I know when it’s done? The casserole should be bubbling around the edges, the cheese should be melted and golden, and if you insert a knife into the center, it should come out hot. An instant-read thermometer should register 165°F in the center.
What can I serve with this? I love serving this with a simple green salad dressed with a bright vinaigrette to cut through the richness. Roasted green beans or steamed broccoli are also wonderful choices. And of course, crusty garlic bread is never a bad idea!
Can I use turkey instead of chicken? Definitely! This is actually a fantastic way to use up Thanksgiving leftovers. Turkey Tetrazzini is a beloved tradition in many homes for that very reason.
This Chicken Tetrazzini has brought so much joy to my table over the years, and I hope it does the same for yours. There’s something special about pulling a bubbling, golden casserole from the oven and watching everyone’s faces light up. It’s comfort food at its finest – rich, satisfying, and made with love. Whether you’re cooking for your family on a weeknight or preparing something special for guests, this recipe delivers every single time. Happy cooking, my friends!
On a night with less time to spare, our creamy Tuscan chicken skillet hits the same notes in one pan. For more dishes that reheat as well as they bake, see our 18 best casserole recipes.
Chicken Tetrazzini
American · Main Course
A classic creamy chicken and pasta casserole with mushrooms, sherry cream sauce, and melted cheese. The ultimate comfort food that's perfect for family dinners.
Ingredients
- 12 ounces spaghetti
- 4 cups cooked chicken, diced or shredded
- 8 tablespoons butter, divided
- 12 ounces mushrooms, sliced
- 1 medium onion, diced
- 4 cloves garlic, minced
- 6 tablespoons all-purpose flour
- 2 cups chicken broth
- 1 1/2 cups heavy cream
- 1/3 cup dry sherry
- 1 cup grated Parmesan cheese, divided
- 1 1/2 cups shredded mozzarella cheese
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1/4 teaspoon ground nutmeg
Instructions
- Preheat oven to 350°F (175°C). Grease a 9x13-inch baking dish.
- Bring a large pot of salted water to a boil. Cook spaghetti until 2 minutes shy of al dente. Drain and set aside.
- In a large deep skillet or Dutch oven, melt 4 tablespoons butter over medium heat. Add mushrooms and cook for 5-7 minutes until golden brown.
- Add onion to the mushrooms and cook for 3-4 minutes until softened. Add garlic and cook for 30 seconds until fragrant.
- Push vegetables to the sides of the pan. Add remaining 4 tablespoons butter to the center and let melt. Sprinkle flour over butter and stir constantly for 2 minutes.
- Gradually pour in chicken broth while stirring constantly to prevent lumps. Add heavy cream and sherry.
- Bring sauce to a gentle simmer and cook for 5 minutes, stirring frequently, until thickened.
- Season sauce with salt, pepper, and nutmeg. Remove from heat and stir in 1/2 cup Parmesan cheese.
- Add cooked pasta and chicken to the sauce, tossing until everything is well coated.
- Transfer mixture to prepared baking dish and spread evenly.
- Sprinkle remaining 1/2 cup Parmesan and mozzarella cheese over the top.
- Bake for 25-30 minutes until bubbling and cheese is golden brown. Optional: broil for 2-3 minutes for extra crispy top.
- Let rest for 5-10 minutes before serving.
Nutrition: 520 calories
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