Classic Tuna Noodle Casserole (Easy 30-Minute Dinner)

Tuna noodle casserole is one of those classics that almost every family makes a little differently.

At its core, it’s simple: tender noodles tossed in a creamy tuna sauce, baked until hot and comforting. Everything else, from the type of noodles to whether you add a crunchy topping or a little cheese, is up for debate.

I’ve been making tuna casserole for as long as I’ve been cooking family meals. It’s one of those dependable, pantry-friendly dinners I can pull together without much thought.

If you’ve got a couple cans of tuna, a box of noodles, and some cream of mushroom soup, you’re halfway there.

When my kids were younger and evenings were busy, this was a dinner I could throw together in a pinch and still feel good about serving. With this recipe we’re not aiming for fancy. We’re aiming for quick, easy, and delicious!

Why You’ll Love This Easy Tuna Noodle Casserole

• Pantry-friendly ingredients. Canned tuna, boxed noodles, and canned soup mean you can make this quick tuna casserole recipe at a moment’s notice.
• Budget-friendly. Most ingredients can be stored in the pantry or freezer and bought on sale.
• Meal in one. Protein, vegetables, and starch all baked together.
• Fast workflow. While the noodles cook, you prep the sauce and topping.
• Great leftovers. I love it reheated the next day, and I even enjoy it cold straight from the fridge.

If you love old-school cream of mushroom-based casseroles, my Hamburger Rice Casserole is another cozy classic.

My Personal Tweaks for the Best Casserole

I’ve been refining this recipe for decades, and through years of trial and error, I’ve found three specific tweaks that elevate this from a basic casserole to a family favorite:

• Sautéed celery is a must. I sauté it for just a few minutes so it keeps a bit of its “snap.” It cuts through the richness of the tuna and adds a layer of fresh flavor you don’t get with just canned ingredients.
• The secret to the sauce is pasta water. I use two cans of soup for extra creaminess, but the real trick is adding a splash of starchy pasta water. It helps the sauce coat the noodles smoothly instead of just sitting on top of them.
• Swap the crumbs for a Panko-Parm mix. Plain breadcrumbs can just get dry on top. I use butter-coated Panko and toss in some grated Parmesan for a salty, golden crust that really makes the topping stand out.

Ingredients Needed for Tuna Casserole with Cream of Mushroom Soup

This tuna casserole with mushroom soup uses minimal basic ingredients. (See the recipe card below for exact amounts.)

• Egg noodles
• Canned tuna
• Cream of mushroom soup
• Onion and celery
• Frozen peas
• Butter
• Panko bread crumbs
• Parmesan cheese
• Black pepper

Ingredient Notes & Substitutions for Classic Tuna Casserole Recipe

Noodles:
I prefer egg noodles for tuna casserole because their flat, tender texture pairs perfectly with the creamy sauce. Rotini works well too, and farfalle is a pretty option that’s easy to grab with a fork.

Tuna:
I use chunk light tuna packed in water. It’s typically lower in mercury than albacore and usually more affordable. Oil-packed tuna will add richer flavor if that’s your preference.

Cream of mushroom soup:
You can substitute cream of celery or cream of chicken. This baked tuna casserole is forgiving.

Onion & celery:
Yellow onion gives the best flavor. I love celery in tuna for sandwiches, and it adds a fresh crunch here too. If you’re out, it’s not a dealbreaker, but grab some next time.

Peas:
Frozen peas are bright and sweet. I don’t recommend canned peas. You can swap with corn, carrots, or increase the celery.

Butter:
Use unsalted if possible since canned ingredients already contain salt.

Topping:
This recipe uses a mixture of panko bread crumbs and grated Parmesan cheese for a crispy, savory finish. Panko gives the best crunch. You can substitute crushed Ritz crackers or cornflakes if needed. Potato chips will also work if that’s your style.

How to Make Tuna Noodle Casserole

Detailed recipe and instructions are in recipe card at bottom of post.

Cook the Egg Noodles Al Dente

Cook noodles according to package directions, stopping at al dente.

Before draining, reserve about ½ cup of the starchy noodle water. The starch helps the sauce cling to the noodles, just like I do in my 15-Minute Cherry Tomato Pasta.

Drain and set aside.

Sauté the Onion and Celery

Melt half the butter in a large pan over medium heat. Add diced onion and chopped celery and sauté until just softened and fragrant.

Make the Creamy Tuna Casserole Sauce

Stir in the cream of mushroom soup, thawed peas, and a splash of the reserved pasta water if you want it thinner.

To save time, I usually thaw the peas in the microwave while the pasta is boiling and the onions and celery are cooking.

Let the sauce heat through for 1 to 2 minutes.

Add the Tuna and Stir in the Noodles

Stir in the drained tuna and break it up into small pieces with a fork. Add black pepper.

Next, add the cooked egg noodles directly into the pan and gently stir until everything is evenly coated in the creamy tuna sauce. I find this much easier than trying to mix it all in the casserole dish.

Make the Buttery Panko Parmesan Topping

In a small bowl, combine melted butter, panko bread crumbs, and grated Parmesan cheese. Stir until the crumbs are evenly coated.

Transfer to Casserole Dish, Add Topping and Bake

Pour the tuna and noodle mixture into a 2-quart casserole dish and spread it out evenly. Sprinkle the buttery panko Parmesan topping evenly over the surface so every bite gets a little crunch.

Bake uncovered at 375°F for 15 to 20 minutes, until hot and bubbly and the topping is golden and crisp.

Recipe Notes & Tips for Baked Tuna Casserole

Don’t overcook the noodles: Al dente is as far as you should go. The casserole will continue cooking in the oven.

Fast workflow tip: Use noodle cooking time to chop vegetables and drain tuna. While the sauce simmers, prep the topping.

Make ahead: Assemble through Step 4 and refrigerate. Let the dish sit at room temperature for 15 minutes before baking. Add topping just before baking and increase bake time to 25 to 30 minutes.

Storage: Store leftovers in an airtight container in the refrigerator for up to 3 days.

Reheating: Reheat in the microwave. If it seems dry, stir in a splash of milk before heating.

Freezing: I don’t recommend freezing tuna noodle casserole. Cooked noodles tend to break down and become mushy once thawed.

FAQs About Tuna Fish Casserole

Can you freeze tuna casserole?
In my experience, noodles do not freeze well. They tend to break down and lose their texture after thawing.

How do you reheat tuna casserole?
Reheat individual portions in the microwave. Add a splash of milk if it needs moisture.

Can this be made ahead?
Yes. Assemble the casserole without the topping and refrigerate. Add topping just before baking and allow extra cook time.