Tuna “Noodle” Casserole


tuna noodle casserole (paleo) by myheartbeets.com

Tuna noodle casserole is comfort food. There’s just something about this hearty hot dish that brings back memories of childhood.

Think of this recipe as a gourmet grown-up version of the tuna noodle casserole you grew up eating. We’re switching out noodles for spaghetti squash and replacing canned cream of mushroom soup with a spicy and flavorful homemade version.

I think the only thing that’s the same in my version vs. the mostly processed version are the peas. And, if you don’t like peas, I suppose you can substitute them for something else.

The great thing about using spaghetti squash as a base for this casserole is that it’ll stretch the dish for several meals. I’d say this dish could easily feed six people. I’ve already had it for like 4 meals and there’s more than half left. It’s so delicious that you’ll look forward to leftovers. This with some hot sauce (cholula, please) – ohh man, what a combination.

A note about my homemade cream of mushroom soup – when you blend this together, I suggest blending the soup until it’s nice and thick so that it better coats the “spaghetti” strands.

When you put this in the oven, it’ll get nice and bubbly. After it’s done cooking, top it with a mix of almond flour and butter or ghee and bake until golden on top!

tuna noodle casserole (paleo) by myheartbeets.com

Tuna “Noodle” Casserole

Tuna “Noodle” Casserole

5 from 5 reviews
Pin Recipe Print Recipe


Tuna Noodle Casserole



  • Preheat oven to 400 degrees.
  • Combine the tuna, cream of mushroom soup, peas and cooked spaghetti squash strands and spices in a casserole dish.
  • Bake at 400 degrees for 20 minutes, or until the casserole is bubbling.
  • In the meantime, combine the butter and the almond flour in a small bowl and mix well.
  • Once the casserole has finished cooking, sprinkle the flour mixture on top of the casserole dish.
  • Put the dish back in the oven, and bake for 10 more minutes, or until the top is golden brown (broil for a minute if needed).

To prepare squash using the oven method:

  • Preheat oven to 375.
  • Cut the squash in half, scoop out the seeds, and add a little oil, salt and pepper to cut sides.
  • Place squash cut side down in a baking dish.
  • Bake for 30-45 minutes or until you can easily pierce the skin with a knife (cooking time depends on size of squash).
Did you make this recipe?Tag @myheartbeets on Instagram and hashtag it #myheartbeets!

Pin This Recipe

Like this recipe? Pin it to your favorite Pinterest board now so you will remember to make it later!

Pin Recipe Now0

Related Recipes


Find out more about my cookbooks Indian Food Under Pressure and South Asian Persuasion.

About Ashley

Hi, I’m Ashley. Thanks for being here! I truly believe that food brings us closer together. Gather around a table with good food and good people, and you’ll have the ingredients you need to create some happy memories. My hope is that you find recipes here that you can’t wait to share with family and friends.


Subscribe to get our latest content by email. We won't send you spam. You can unsubscribe at any time.

Reader Interactions

Leave a Comment & Rating

Your email address will not be published. Required fields are marked *

Recipe Rating


  1. Aimee Schnipke says

    I’ve been dying to try this recipe. I’m starting the mushroom soup and getting the spaghetti squash in the oven, but I have a question: we don’t do any dairy. including ghee. I think coconut oil would probably work, but we also try to limit oil. Any ideas for the topping? And thank you so much for the recipes. 🙂

  2. Alyssa Bilton-Smith says

    I just made your mushroom soup in preparation for this and it’s amazing! But I was wondering what size Casserole dish you used for this?

Show More Comments

masala turkey

My Indian Fusion Thanksgiving Menu

My complete Thanksgiving menu with an Indian twist!


paneer lababdar

Ashley's Secrets



Favorite tips & tricks to

easy & delicious Indian cooking