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Chicken Tetrazzini Casserole

Chicken Tetrazzini Casserole, sometimes called Cheesy Chicken Spaghetti, is a creamy and classic comforting chicken casserole that is perfect for the fall and winter months.

Two portions of Chicken Tetrazzini Casserole on white plates.

Creating This Easy Chicken Tetrazzini Recipe

In the past 10 years, I’ve made many changes to the original cheesy chicken tetrazzini recipe that my mom used to make for our family growing up.

My remastered chicken tetrazzini casserole recipe nixes the over salted cream of chicken soup in favor of a homemade creamy chicken sauce created from a roux, chicken broth and whole milk.

My mom never added mushrooms to her version of this recipe, but seeking to increase the vegetables and nutrients I have been adding mushrooms for a while. I think they are a great addition. I also opted for half red and half green bell peppers to add color to this otherwise monotone dish.

Ingredients in Chicken Tetrazzini Casserole

The ingredients list for this cheesy chicken tetrazzini is simple, despite there being no canned soup in the recipe.

  • Spaghetti
  • Chicken
  • Bell Peppers
  • Celery
  • Onion
  • Mushrooms
  • Garlic
  • Thyme and Parsley
  • Flour
  • Milk
  • Sherry
  • Chicken Broth
  • Parmigiano Reggiano
  • Sharp Cheddar
  • Salt, Pepper, and Nutmeg

For the complete ingredient list and detailed instructions, scroll to the bottom of this post for the FREE printable recipe card.

Can I Substitute Leftover Turkey in this Chicken Tetrazzini?

Absolutely! This chicken tetrazzini recipe is a great one to use if you have a lot of leftover turkey after the holidays and want to make a comforting casserole.

How to Make Chicken Tetrazzini Casserole

This easy chicken tetrazzini recipe is a one pot wonder! Here’s a look at how it’s made:

  1. In a large saute pan, melt 1 tablespoon of butter. Saute the onion over medium heat until tender and golden.
  2. Add the mushrooms and celery and saute for about 5 minutes.
  3. Add garlic and bell pepper and saute for an additional minute. Transfer to a bowl and set aside.
  4. Add remaining butter to the pan. Whisk in the flour. Slowly add the milk, whisking as you pour.
  5. Then, add the sherry and chicken broth. Stir in the thyme, parsley, nutmeg, bay leaf, salt, and pepper.
  6. Simmer for about 5 minutes, then remove and discard the bay leaf.
  7. Return the vegetables along with the chicken to the pan and stir to combine.
  8. Add the pasta, Parmigiano Reggiano, and the cheddar. Stir until well combined.
  9. Sprinkle additional cheese on top.
  10. Cover with a lid or foil and bake in the oven at 400 degrees F until heated through and bubbly.

For the complete ingredient list and detailed instructions, scroll to the bottom of this post for the FREE printable recipe card.

Can This Recipe Be Doubled?

Chicken Tetrazzini is a great recipe to have in your files because it is so useful around the Holiday season.

For my family, this recipe bakes up perfectly in the Le Creuset 3 1/2 quart braiser, one of my favorite pans for delicious one-pot comfort foods, but it is easily doubled to feed a crowd (use a larger pan for a double recipe) and simple to put together when you have leftover roasted chicken or turkey.

What to Serve with Chicken Tetrazzini

I like to serve this cheesy chicken tetrazzini with a simple green side salad or some roasted veggies. There are plenty of veggies in the casserole itself, so I like to keep things easy!

Don’t see what you’re looking for here? You can always head over to check out the recipe index to look for more recipes.

Tips for Making Chicken Tetrazzini Casserole

  • When making the creamy sauce, be sure to constantly whisk the mixture to prevent any lumps from forming.
  • You’re welcome to add any extra veggies you have lying around to this cheesy chicken tetrazzini. The pasta and cheese hide lots of finely diced vegetables from picky eaters!
  • I recommend using spaghetti or fettuccine noodles in this recipe — anything long and thin will work.

More Easy Chicken Dinners:

This Baked Honey Mustard Chicken is one of our favorite recipes. Chicken tenderloins are baked in a sweet and savory honey mustard sauce with sprigs of fresh rosemary.

Easy Smoked Chicken is a great summer meal. The chicken turns out incredibly flavorful, tender and juicy.

This Orange Marmalade Chicken is a sweet and spicy simple Asian-inspired chicken recipe for dinner. Serve it with rice or quinoa and a side of your favorite veggies.

This easy Tarragon Chicken recipe comes together in less than 30 minutes and can be made in your pressure cooker! Perfect for busy weeknights!

This Rosemary Roasted Chicken is super moist with a crispy skin. Enjoy tonight for dinner and repurpose the leftovers in another dish tomorrow!

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chicken tetrazzini

Chicken Tetrazzini Casserole

Yield: serves 6
Prep Time: 20 minutes
Cook Time: 20 minutes
Total Time: 40 minutes

Chicken Tetrazzini, sometimes called Cheesy Chicken Spaghetti, is a creamy and classic comforting chicken casserole that is perfect for the fall and winter months.

Ingredients

  • 3 tablespoons butter
  • 1 stalk celery, diced
  • 1 yellow onion, diced
  • 10 ounces sliced mushrooms
  • 1 cup diced bell pepper - mix of red and green
  • 3 cloves garlic, minced
  • 1/4 cup all-purpose flour
  • 3/4 cup whole milk
  • 2 tablespoon sherry
  • 2 cups chicken broth
  • 2 teaspoons fresh thyme
  • 1 tablespoon fresh parsley, minced
  • 1/4 - 3/4 teaspoon salt, according to taste
  • 1/4 - 1/2 teaspoon black pepper
  • 1/4 teaspoon nutmeg
  • 10 -12 ounces spaghetti or linguini, cooked slightly less than al dente
  • 3 cups cubed or shredded chicken or turkey
  • 1 cup freshly grated Parmigiano Reggiano
  • 1/2 cup sharp cheddar cheese

Instructions

  1. Preheat oven to 400 degrees F.
  2. In a large saute pan (I like to use a Le Creuset braiser), melt 1 tablespoon of butter. Saute the onion over medium heat until tender and golden, about 3-5 minutes. Add the mushrooms and celery and saute for about 5 minutes. Add garlic and bell pepper and saute for an additional minute. Transfer to a bowl and set aside.
  3. Add remaining 2 tablespoons of butter to the pan. Whisk in the flour. Slowly add the milk, whisking as you pour. Then add the sherry and chicken broth, whisking to eliminate any lumps. Stir in the thyme, parsley, nutmeg, bay leaf, salt, and pepper. Simmer for about 5 minutes, then remove and discard the bay leaf.
  4. Return the vegetables along with the chicken to the pan and stir to combine. Add the pasta, stirring again and 3/4 cup of the Parmigiano Reggiano and the cheddar. Stir until well combined. Sprinkle the remaining 1/4 cup of cheese on top.
  5. Cover with a lid or foil and bake in the oven at 400 degrees F until heated through and bubbly.

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Nutrition Information
Yield 6 Serving Size 1
Amount Per Serving Calories 537Total Fat 25gSaturated Fat 12gTrans Fat 1gUnsaturated Fat 9gCholesterol 124mgSodium 1171mgCarbohydrates 38gFiber 3gSugar 6gProtein 39g

GoodLifeEats.com offers recipe nutritional information as a courtesy and is an estimate only. This information comes from online calculators. Although GoodLifeEats.com makes every effort to provide accurate information, these figures are only estimates.

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