Close-up of a baked Turkey Tetrazzini casserole in a white dish, with a golden brown crispy breadcrumb topping.

Amazing Turkey Tetrazzini: 4 Cups Leftover Magic

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Written by Caroline Hayes

October 31, 2025

Oh, that feeling after a big holiday meal, right? You’ve got all this amazing leftover turkey, and you want to do something special with it, something that feels like a warm hug in a bowl. That’s exactly where this incredible Turkey Tetrazzini comes in! It’s not just a recipe; it’s like a little secret handshake for turning those post-Thanksgiving days into something truly delicious and comforting. Here at Recipes To Keep, we’re all about preserving those classic American dishes that just make you feel good, and believe me, this one is a true gem. Caroline Hayes has poured her heart into testing this recipe to make sure it’s as perfect and foolproof as you remember, or even better!

Why You'll Love This Turkey Tetrazzini Recipe

Trust me, this dish is a game-changer:

  • It’s the ultimate comfort food – creamy, cheesy, and oh-so-satisfying.
  • You’ll make perfect use of that leftover turkey, turning it into a brand new star!
  • Busy after the holiday? This is your go-to leftover turkey pasta that comes together in a flash.
  • It’s the perfect post-Thanksgiving dinner idea that everyone will ask for seconds of.

Gather Your Ingredients for Turkey Tetrazzini

Alright, let’s get these goodies together for our amazing Turkey Tetrazzini! It’s pretty straightforward, using good old pantry staples and that leftover turkey. You’ll need:

  • 1 pound spaghetti (or your favorite medium pasta shape!)
  • 1/2 cup butter
  • 1 cup chopped onion
  • 1 cup sliced mushrooms
  • 1/2 cup all-purpose flour
  • 3 cups chicken broth (low-sodium is great if you have it!)
  • 1 1/2 cups milk (whole milk makes it extra creamy!)
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/4 teaspoon paprika
  • 1/4 teaspoon garlic powder
  • 4 cups cooked, shredded turkey (this is the star!)
  • 1 cup shredded cheddar cheese
  • 1/2 cup grated Parmesan cheese
  • 1/2 cup breadcrumbs (plain or Italian style works perfectly)

Don’t worry if you don’t have exactly what’s listed; a little flexibility is part of the fun in the kitchen!

Tips for Perfect Turkey Tetrazzini

Making a truly knockout Turkey Tetrazzini is all about a few little secrets, and trust me, they make all the difference! Caroline Hayes always says that paying attention to the details is what separates a good dish from a great one.

First off, don’t overcook your pasta! Cook your spaghetti just until it’s ‘al dente’ – still got a little bite. It’s going to bake more, so you don’t want it turning mushy. When you’re making that creamy sauce, whisk constantly to keep it super smooth. If it seems a *little* too thick, don’t be afraid to add a splash more milk or broth until it’s just right, silky and luscious.

Sprinkle those cheeses generously; don’t be shy! And for the breadcrumbs, toasting them just a tiny bit beforehand can add an extra layer of nutty flavor and crunch. Oh, and if you’re feeling fancy and want to share your masterpiece online, give us a tag on Facebook – we love seeing your culinary triumphs!

How to Make This Creamy Turkey Tetrazzini Casserole

Alright, let’s get this magical dinner happening! Making this creamy bake with mushrooms turns your leftover turkey into a total showstopper. It’s easier than you think, and totally worth every minute. You’ll be so happy you took the extra step to make this classic Turkey Tetrazzini. You can find more main dish inspiration over at Recipes To Keep!

Prepping Your Pasta and Oven

First things first, get your oven preheating to 375°F (190°C). While that’s getting nice and toasty, cook up your spaghetti according to the package directions. Remember, we want it just *al dente* because it’s going back into the oven! This is a great dish if you’re looking for easy weeknight meals.

Creating the Creamy Mushroom Sauce

Now for the heart of our Turkey Tetrazzini! Grab a big skillet or a Dutch oven and melt that butter over medium heat. Toss in your chopped onion and sliced mushrooms. Let them soften up for about 5-7 minutes, filling your kitchen with a lovely aroma. Sprinkle that flour right over them and stir it around for a minute. Slowly, whisk in the chicken broth and milk, stirring all the time until it’s nice and smooth and starts to thicken up. Season it with salt, pepper, paprika, and garlic powder. This sauce is going to coat everything so beautifully!

Combining and Assembling the Turkey Tetrazzini

This is where it all comes together! Stir your shredded turkey into that gorgeous creamy sauce. Then, in a big bowl, combine the cooked spaghetti with the turkey mixture. Toss in most of your cheddar and all of your Parmesan cheese – save a little cheddar if you like a cheesy top! Mix it all up gently until everything is coated. Pour this deliciousness into a greased 9×13 inch baking dish. Sprinkle the breadcrumbs evenly over the top, and maybe even that extra bit of cheddar if you saved some!

Baking to Golden Perfection

Pop that beautiful dish into your preheated oven. Bake it for about 20-25 minutes. You want to see it all bubbly around the edges and that breadcrumb topping getting a nice, golden-brown color. It’s going to smell amazing!

Frequently Asked Questions about Turkey Tetrazzini

Got questions about rocking this classic dish? I’ve got answers! For even more tips and tricks, you can always check out the Recipes To Keep blog!

Can I make Turkey Tetrazzini ahead of time?

Oh, absolutely! You can totally assemble the whole dish (pasta, sauce, turkey, cheese, breadcrumbs) and then just cover it tightly and pop it in the fridge. Bake it when you’re ready, maybe adding a few extra minutes to the baking time since it’ll be cold. Easy peasy!

What kind of pasta is best for this recipe?

Spaghetti is the classic choice for Turkey Tetrazzini, and it works beautifully! But honestly, any medium-shaped pasta like fettuccine, linguine, or even penne would be fan-tastic. Just make sure it’s cooked al dente!

How can I make my Turkey Tetrazzini richer or creamier?

For an extra decadent touch, try using half-and-half instead of milk in the sauce – it makes it wonderfully rich! You could also stir in a dollop of sour cream at the very end, right before baking, for an amazing creamy kick. It’s all about making your Turkey Tetrazzini totally irresistible!

Estimated Nutritional Information

Just a heads-up, while this dish is pure comfort, the numbers can swing a bit depending on exactly what you use. This is a rough guide per serving:

  • Calories: Around 550
  • Fat: About 25g
  • Protein: Roughly 35g
  • Carbohydrates: Approximately 45g
  • Sodium: Around 800mg

These are just estimates, so you know!

Share Your Creations!

Have you whipped up this delicious bake? We’d absolutely LOVE to see it! Snap a pic and tag us on social media, or better yet, leave a comment below and tell us how it turned out, or maybe share your own special tips. Your feedback helps us keep the recipes coming, and we love hearing from you! If you have questions or just want to share the love, you can always reach out via our contact page.

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Amazing Turkey Tetrazzini: Your Comfort Dish

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A creamy and comforting pasta casserole made with leftover turkey, perfect for a post-Thanksgiving meal.

  • Author: Caroline Hayes
  • Prep Time: 20 min
  • Cook Time: 25 min
  • Total Time: 45 min
  • Yield: 6 servings 1x
  • Category: Dinner
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

Scale
  • 1 pound spaghetti
  • 1/2 cup butter
  • 1 cup chopped onion
  • 1 cup sliced mushrooms
  • 1/2 cup all-purpose flour
  • 3 cups chicken broth
  • 1 1/2 cups milk
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1/4 teaspoon paprika
  • 1/4 teaspoon garlic powder
  • 4 cups cooked, shredded turkey
  • 1 cup shredded cheddar cheese
  • 1/2 cup grated Parmesan cheese
  • 1/2 cup breadcrumbs

Instructions

  1. Preheat your oven to 375 degrees F (190 degrees C). Cook spaghetti according to package directions; drain and set aside.
  2. In a large skillet or Dutch oven, melt butter over medium heat. Add onion and mushrooms; cook until softened, about 5-7 minutes.
  3. Sprinkle flour over the onion and mushroom mixture. Stir and cook for 1 minute.
  4. Gradually stir in chicken broth and milk until smooth. Bring to a simmer, stirring constantly, until thickened.
  5. Stir in salt, pepper, paprika, and garlic powder.
  6. Add the shredded turkey to the sauce.
  7. In a large bowl, combine the cooked spaghetti, turkey mixture, cheddar cheese, and Parmesan cheese. Toss to coat evenly.
  8. Pour the mixture into a greased 9×13 inch baking dish.
  9. Sprinkle breadcrumbs evenly over the top.
  10. Bake for 20-25 minutes, or until bubbly and lightly browned.

Notes

  • For a richer flavor, you can use half-and-half instead of milk.
  • If you don’t have leftover turkey, cooked chicken can be substituted.
  • Add a pinch of nutmeg to the sauce for an extra layer of flavor.

Nutrition

  • Serving Size: 1 serving
  • Calories: 550
  • Sugar: 5g
  • Sodium: 800mg
  • Fat: 25g
  • Saturated Fat: 10g
  • Unsaturated Fat: 15g
  • Trans Fat: 0g
  • Carbohydrates: 45g
  • Fiber: 3g
  • Protein: 35g
  • Cholesterol: 120mg

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Caroline Hayes is the heart and soul behind Recipes To Keep. Inspired by her grandmother's overflowing recipe box from rural Ohio, Caroline has dedicated herself to preserving timeless American classics. She is a passionate home cook and recipe archivist who specializes in testing and perfecting cherished dishes for the modern kitchen. Her goal is to ensure every recipe is a "keeper"—reliable, delicious, and ready to become a part of your family's story.

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