Tuna Casserole

4 People
35 min

Creamy tuna casserole is the ultimate comfort food!

It’s rare that I come across a recipe and get an urge to prepare it right away. But ever since I have known about tuna casserole, I have prepared it regularly. If you also want to experience the rich flavors of tuna casserole, you have come to the right place.

Unlike other tuna casserole recipes, mine doesn’t include several ingredients.

I have kept my recipe simple, so you can prepare it whenever you want without shopping for extra ingredients. With this tuna casserole, you can serve garlic fries, stuffed peppers, brown rice, baked sweet potatoes, or fried green beans.

Scroll down to check the recipe.

Cheesy Tuna Casserole

Yummy Cheesy Tuna Casserole

When the weather gets cozy, I crave yummy cheesy tuna casserole.

My tuna casserole is not any usual recipe. It is different because I have tried to keep minimal ingredients. I always prepare it for my family, and my kids totally love it. Honestly, I want this tuna casserole to be one of my children’s finest childhood memories.

While I have talked a lot about the taste, I forgot to mention how quickly this casserole gets prepared. If you follow the instructions correctly, cooking can be completed in less than an hour.

I have seen many variations of tuna casserole using veggies. As I don’t like the idea of adding too many veggies, my recipe doesn’t have much of them. I always prepare it as a cheat meal. But you can add veggies like peas and celery to enhance the overall taste of the dish.

Steps to Make Delicious Tuna Casserole

Here’s how you can prepare the tuna casserole.

Step One:

Making this tuna casserole is pretty straightforward. All you need to do is peel an onion and wash it under running water. After cleaning, dice the onion and keep it aside in a bowl.

Then you need to boil water in a pan and add the pasta. Once the pasta is al dente, you can turn off the heat, drain the water, and keep the pasta in a different bowl.

Step Two:

Cheesy Tuna Casserole step one

For the next step, you need to heat a pan and add butter. Once the butter gets warm, you can add diced onion. Stir and add all-purpose flour after a while. Mix everything and then pour whole milk.

Cheesy Tuna Casserole step three

Regularly stir the milk, so it gets a nice buttery flavor. Season the milk with salt and pepper to taste. After that, you can add canned tuna, corn, and cooked pasta to the pan. Mix and combine everything.

Cheesy Tuna Casserole step four

Step Three:

At last, you can transfer the cooked tuna into a greased casserole. On top, you can add grated cheese to give your casserole a nice and cheesy flavor. Let it bake for about 25 minutes. Serve hot and enjoy.

Cheesy Tuna Casserole step five

Key Notes:

  • You can give extra crunch to your tuna casserole by adding breadcrumbs. The right time to add breadcrumbs after your casserole has been properly baked.
  • You can make your tuna casserole more healthy by adding a few veggies like peas and celery. In addition, you can add mushroom soup to your dish to elevate the taste.
  • For a tangy twist, you can add sour cream. It will also make your recipe more creamy and a lot yummier.
  • If you don’t have cheddar cheese, you can add gruyere cheese. It gives out a nutty flavor and saltiness to the dish.

Why is my tuna casserole dry?

Your tuna casserole can become dry if you don’t add enough liquid to it. In such a case, the added pasta in the dish can stick together. Another reason your tuna casserole can become dry is that you are using a large casserole pan. Also, not covering the dish with foil can make the dish dry.

How to eat tuna casserole?

The creamy tuna casserole tastes yummy when it’s hot, but you can also enjoy it cold. This delicious meal can feed the whole family.

How to Freeze Tuna Casserole?

You can easily freeze tuna casserole before or after it’s cooked. If you want to cook a frozen tuna casserole, you must thaw it, so the casserole doesn’t overcook and undercook in some areas.

To thaw the casserole safely, take the dish out of the freezer and put it inside the fridge. After that, you can bake it.

You can freeze a baked tuna casserole by transferring it into a container and wrapping it nicely. The wrapping ensures no moisture can enter the dish. This way, you can freeze the casserole for up to 6 months without destroying the flavors or texture.


Recipe details
  • 4  People
  • Prep time: 10 Minutes Cook time: 25 Minutes Total time: 35 min
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  • 3 tablespoons butter
  • 1 onion, diced
  • 1/3 cup all-purpose flour
  • 2 1/2 cups whole milk
  • Salt and pepper to taste
  • 1/2 cup frozen corn
  • 11 oz. canned tuna
  • 1/2 lb cooked pasta
  • 2 cups grated cheese

Warm the butter in a nonstick frying pan over medium heat and stir in the diced onion.
Cook for about 5 minutes and stir in the flour.
Pour in the whole milk and season with salt and pepper to taste.
Stir in the corn, canned tuna, and cooked pasta.
Mix until everything is combined and transfer to a casserole pan well - greased with butter. Sprinkle with grated cheese.
Bake for 25 minutes in an already heated oven at 350F or 180 C degrees.
Serve and enjoy
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  • Tina Tina on Dec 11, 2022

    Why bother to heat in the oven? I haven't tried it yet but am quite sure the microwave would do the trick.

    • Iammacha Iammacha on Dec 11, 2022

      The oven finish is to melt and brown the cheese. You won’t get a browned cheese topping in the microwave and it makes noodles too rubbery if you leave it in long