Chicken Tetrazzini

This chicken tetrazzini is an easy chicken casserole in a creamy mushroom sauce, baked in the oven with a crispy, cheesy topping.

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I love a good cheater chicken casserole, and this chicken tetrazzini fits the bill! This recipe uses leftover or rotisserie chicken, canned soups, fresh mushrooms and spices to make a fast and easy dinner that everyone will love.

green tablecloth beside the glass baking dish full of chicken tetrazzini with wooden spoon

Easy Chicken Tetrazzini

There’s no cooking hack I like more than picking up a rotisserie chicken in the store and using it to make a fast meal – and I usually pick up two at a time, as chicken vegetable soup and chicken and wild rice soup are always an easy dinner to make with rotisserie chicken as well.

This is meant to be a fast and easy tetrazzini, not a complex one where you make everything from scratch – and that’s totally okay! I love a good canned soup recipe!

green tablecloth beside the glass baking dish of chicken tetrazzini with wooden spoon, some parsley leaves beside it and a white plate with some Chicken Tetrazzini and fork

Chicken Tetrazzini Ingredients

The ingredients are super simple:

  • cooked spaghetti
  • cooked chicken
  • cream soups
  • fresh mushrooms
  • sour cream
  • spices
  • cheese
Chicken Tetrazzini Ingredients on a dark wood background

How to Make Chicken Tetrazzini

The method to make this is really easy since you use precooked chicken meat and the soups for flavor.

  1. Pre-cook pasta so that it is cooked to al dente.
  2. Cook the mushrooms in butter in a large skillet.
  3. Add in broth, then sauce ingredients and heat.
  4. Pour the skillet sauce over the pasta, combining thoroughly. Transfer to the 9×13 pan.
  5. Sprinkle the topping over the dish.
  6. Bake for 30-35 minutes OR until the casserole is bubbling and the topping is browned.
  7. Cool for 5 minutes before serving.
close up glass baking dish full of chicken tetrazzini with wooden spoon

Make Ahead

You can cook everything ahead of time and just put it together when you are ready to cook it ( and using a rotisserie chicken makes the chicken meat part extremely easy). You can prep this the night before, leave the topping off, cover and refrigerate. The next day simply add the topping and cook as per the instructions, adding another 10 minutes to the cooking time to account for the coldness of the dish from the fridge. MAKE SURE that the pasta is cooked to al dente however or you will have mush!

More Chicken Casserole Recipes



Chicken Tetrazzini

This chicken tetrazzini is an easy chicken casserole in a creamy mushroom sauce, baked in the oven with a crispy, cheesy topping.
5 from 49 votes
Prep Time
20 minutes
Cook Time
30 minutes
Total Time
50 minutes
Main Course
Karlynn Johnston


Tetrazzini Sauce

  • 2 tablespoons butter
  • 8 ounces mushrooms, sliced thinly
  • 1/2 cup chicken broth
  • one 568 milliliter can cream of mushroom soup
  • one 568 milliliter can cream of Chicken Soup
  • 1 cup sour cream
  • 3 cups shredded roasted chicken breast
  • 1/2 cup Parmesan cheese, grated
  • 1 teaspoon onion powder
  • 1 teaspoon garlic powder
  • 1 teaspoon Italian seasoning


  • 12 ounces hot cooked spaghetti cook to al dente


  • 1/4 cup bread crumbs
  • 1/2 teaspoon Italian Seasoning
  • 1/2 cup mozzarella cheese, grated


  • Preheat your oven to 350°F. Spray a 13×9-inch (3-quart) glass baking dish with cooking spray and set aside.
  • In a large nonstick skillet, melt the butter over medium-high heat. Cook the mushrooms in the butter for 8-10 minutes, stirring occasionally, until soft and browned.
  • Once cooked, add in the chicken broth and deglaze the pan, scraping any brown bits off of the bottom.
  • Add in the rest of the sauce ingredients and combine. Heat up in the pan, stirring to ensure it doesn't burn.
  • Place the cooked spaghetti in a large bowl, then pour the skillet sauce over top, combining thoroughly. Once the pasta is covered, transfer to the 9×13 pan.
  • Mix the bread crumbs, seasoning and mozzarella together, and sprinkle evenly over dish. Transfer to the pre-heated oven and bake for 30-35 minutes OR until the casserole is bubbling and the topping is browned.
  • Cool for 5 minutes before serving.

Recipe Notes

  • You can use two cans of mushroom soup if you prefer it
  • Add in a few handfuls of fresh spinach while sauteing the mushrooms and fry up to add into the casserole 

Nutrition Information

Calories: 496kcal, Carbohydrates: 49g, Protein: 31g, Fat: 19g, Saturated Fat: 10g, Cholesterol: 91mg, Sodium: 456mg, Potassium: 624mg, Fiber: 3g, Sugar: 4g, Vitamin A: 508IU, Vitamin C: 3mg, Calcium: 219mg, Iron: 2mg

All calories and info are based on a third party calculator and are only an estimate. Actual nutritional info will vary with brands used, your measuring methods, portion sizes and more.

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This chicken tetrazzini is an easy chicken casserole in a creamy mushroom sauce, baked in the oven with a crispy, cheesy topping, #chicken #pasta #mushrooms #dinner

Karlynn Johnston

I’m a busy mom of two, wife & cookbook author who loves creating fast, fresh meals for my little family on the Canadian prairies. Karlynn Facts: I'm allergic to broccoli. I've never met a cocktail that I didn't like. I would rather burn down my house than clean it. Most of all, I love helping YOU get dinner ready because there's nothing more important than connecting with our loved ones around the dinner table!

Learn more about me

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Reader Interactions

Comments & Recipe Tips Share a tip or comment!

  1. Maxie Moates says

    Can you leave out mushrooms? Family does not care for them. Can you just use Jarred Alfredo sauce ?

  2. Linda Edwards says

    My husband made this and it was delicious! It makes a big pan, too much for two people! My question is can this be frozen for later?

  3. Gail says

    After I placed everything in the baking dish I realized I hadn’t added the Parmesan cheese. The instructions didn’t say when to add it. I assume it should have been added to the sauce ingredients in the skillet??? Also no mention when to mix in the chicken, I added it to the sauce. Also, when baked my top did not look like the picture, perhaps photo has more than 1/2 Cup of cheese?

  4. Mika says

    For your chicken tetrazzini you don’t mention how much chicken or when to add it

  5. Lola says

    Are the soups that are listed supposed to be in their condensed form or ready to serve form before adding? Thanks in advance!

  6. Bonnie says

    My husband absolutely loved this. He is extremely picky. And we had it for the first time last week. When I was planning this weeks meals. He asked me to add this to the meal plan. He never asks for something 2 weeks in a row. Definite hit.5 stars

  7. Felicia says

    I added some cayenne pepper to this recipe but overall….very very happy with this recipe. Will make this again.5 stars

5 from 49 votes (46 ratings without comment)

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