Tuna Tetrazzini Casserole

Tuna Tetrazzini Casserole

delicious baked spaghetti

Recipe by
Reviewed by Arturs Arnicans
Prep Time: 13m
Cook Time: 45m
Total Time: 52m
Temp.: 350 °F
Servings: 6
Difficulty: Easy
4.7 (7 Reviews)
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Ingredients

Adjust servings:

Nutritional Information

542
Calories
24g
Fat
47g
Carbohydrate
33g
Protein
76mg
Cholesterol
1147mg
Sodium
Tuna Tetrazzini Casserole

Recipe Description

This Tuna Tetrazzini Casserole is a delicious and simple pasta dish. So many people love Tetrazzini which is a creamy baked pasta dish but what most people don’t know is that the dish is named after a famous Italian opera star called Luisa Tetrazzini! Make this casserole for guests soon and wow them with that fun fact!

Start by cooking the spaghetti. As it cooks, start preparing the sauce by sautéing mushrooms and green onions. Add flour and milk and cook while stirring until the sauce starts to thicken. Add tuna and peas before combining the sauce with the cooked spaghetti. Transfer to a casserole dish and top with Parmesan and breadcrumbs. Bake until golden and bubbling. Enjoy!

To make Tuna Tetrazzini Casserole, you will need the following ingredients:

Ingredients for Tuna Tetrazzini Casserole

Recipe Features

No specific features for this recipe

Steps to make

  1. 1

    Heat the oven and prepare a casserole dish

    5 min
    Step 1 - Tuna Tetrazzini Casserole

    Preheat the oven to 350 °F. Lightly grease a 2½-3-quart casserole dish.

  2. 2

    Cook the spaghetti

    15 min
    Step 2 - Tuna Tetrazzini Casserole

    Follow the package directions to cook the spaghetti. Drain and set to one side.

  3. 3

    Sauté mushrooms and green onions

    10 min
    Step 3 - Tuna Tetrazzini CasseroleStep 3 - Tuna Tetrazzini Casserole

    Melt 4 tablespoons of butter. Add the mushrooms and saute, stirring, until mushrooms are browned and tender. Add green onions and cook for one more minute.

  4. 4

    Make the sauce

    5 min
    Step 4 - Tuna Tetrazzini CasseroleStep 4 - Tuna Tetrazzini Casserole

    Sprinkle in 4 tablespoons of flour and stir until fully combined. Gradually pour in 2 cups of milk. Cook while stirring constantly, until the sauce thickens.

  5. 5

    Add tuna and peas

    1 min
    Step 5 - Tuna Tetrazzini CasseroleStep 5 - Tuna Tetrazzini Casserole

    Season to taste with salt and pepper. Stir in the flaked tuna and peas.

  6. 6

    Combine spaghetti with sauce

    2 min
    Step 6 - Tuna Tetrazzini Casserole

    Mix the spaghetti with the tuna sauce. Stir until well combined.

  7. 7

    Assemble the casserole

    2 min
    Step 7 - Tuna Tetrazzini CasseroleStep 7 - Tuna Tetrazzini Casserole

    Transfer the spaghetti to the prepared casserole. Sprinkle 1 cup of shredded Parmesan cheese over the top.

  8. 8

    Top with breadcrumbs

    3 min
    Step 8 - Tuna Tetrazzini Casserole

    In a small pan, melt the remaining 2 tablespoons of butter. Toss the bread crumbs with the melted butter and sprinkle them over the top of the casserole.

  9. 9

    Bake

    30 min
    Step 9 - Tuna Tetrazzini Casserole

    Bake for about 25-30 minutes until it is bubbling and gold on top.

  10. 10

    Serve

    Step 10 - Tuna Tetrazzini Casserole

    Serve immediately with your favorite side salad.

This Tuna Tetrazzini Casserole recipe is a delicious baked pasta dish! Try it soon and make sure you tag your pasta meal pics with the #cookmerecipes hashtag.

About the author

Bethany Lim

Bethany is very passionate about maintaining a healthy lifestyle and clean diet. She’s trying to cut meat out of her diet as much as possible and focuses on cooking vegetarian food and fish. Bethany gets a kick from finding ways to add new twists to classic dishes. What’s more, thanks to her Asian roots, she’s great at combining different cuisines to come up with something extraordinary. Bethany’s recipes will inspire you to add new colors and flavors to your everyday meals.

Recipe Reviews

Have you made this recipe? Share your experience and help other cooks!

★★★★★
★★★★★
4.7 out of 5 (7 reviews)
Tammy
January 7, 2025
Verified

It is better right out of the skillet - don't do the baking aspect as it dries it out SO SO much!

Isabella
June 11, 2024
Verified

Delicious tuna!

George Miller
June 3, 2024
Verified

Delicious! Made this for our anniversary, it was a hit with everyone at the table.

Nina Johnson
August 24, 2023
Verified

I recently made the Tuna Tetrazzini Casserole for a family dinner. It was so easy and delicious! My kids loved it, and it brought back memories of my own mom making it. Such a warm, comforting dish.

Ethan Lewis
February 5, 2022
Verified

I made this Tuna Tetrazzini Casserole for a family dinner and it was a hit! The creamy sauce paired with the pasta is just amazing. It's so easy to prepare, and my kids actually asked for seconds, which never happens! Plus, I love sharing the fun fact about its name.

Bobby
October 15, 2020
Verified

I whipped up this Tuna Tetrazzini for my buddy's b-day and man was it a hit! Super easy to make and the creamy sauce was killer. I love that little tidbit about Luisa Tetrazzini too, made me sound smart! Def a keeper recipe

Athina
October 9, 2020
Verified

Perdect pasta dish!

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