Tuna Casserole Recipe Egg Noodles Cream of Mushroom Soup: One-Pot Creamy Comfort with Crispy Top

This one-pot tuna casserole with egg noodles and cream of mushroom soup delivers the ultimate in creamy comfort—rich, velvety, and topped with a crispy breadcrumb crust.

I developed this recipe after realizing how quickly pantry staples could transform into a satisfying weeknight meal, especially when time and cleanup are limited.

The secret lies in balancing the tangy brightness of the tuna with the earthy depth of the mushroom soup, all while keeping the texture perfectly tender yet satisfying.

The beauty of this dish is its foolproof simplicity: just layer egg noodles, flaked tuna, and the creamy mushroom soup base before topping it with a crunchy breadcrumb mixture. Baked until golden and bubbling, it delivers restaurant-quality results without requiring advanced techniques.

The creamy sauce clings to every noodle, while the crispy top adds a satisfying contrast that makes every bite irresistible.

What you’ll end up with is a dish that’s rich in flavor but light enough for dinner, perfect for feeding a family or meal prepping for the week. The creamy mushroom sauce provides a velvety texture, while the crispy top ensures each bite has that satisfying crunch.

Serve it with a simple side salad or warm crusty bread to soak up every last drop of that delicious sauce.

This recipe is designed to be adaptable—swap in different cheeses, add vegetables, or adjust the seasoning to suit your taste. The key is balancing the components so the tuna shines while the noodles absorb the creamy goodness.

With just one pot to clean, it’s the kind of meal that turns a busy weeknight into a comforting experience without the fuss.

Ingredients for tuna casserole recipe egg noodles cream of mushroom soup

Pantry staples transform into one-pot comfort—creamy, crispy, and packed with tuna's tangy brightness.

The tuna keeps this dish light yet satisfying. Stick with water-packed tuna—oil-packed can make the casserole too greasy. For the soup, Campbell's Cream of Mushroom is my go-to, but any good-quality condensed brand works. The milk and mayo combo creates that velvety texture—full-fat versions make all the difference. If you're watching calories, use half-and-half instead of whole milk. The onion and celery are classic mirepoix—sauté them until soft to build flavor. Trader Joe's has pre-diced frozen versions that save time.

No mayo? Greek yogurt works in a pinch, though it'll be tangier. Short on sour cream? Cream cheese at half the amount gives similar richness. The breadcrumbs need to get crispy—Panko is non-negotiable here. No panko? Crush regular breadcrumbs in a food processor. The cheddar adds depth, but Parmesan works too if you're avoiding dairy. For extra veggies, stir in frozen peas or corn—they'll stay bright in the oven. The garlic can be pre-minced from a jar, but fresh is always better if you've got time.

This casserole tastes even better the next day—make extra for leftovers. Keeps 4-5 days in the fridge, freezes beautifully for up to 3 months. Reheat covered at 350°F until bubbly, then broil 2 minutes for crispy top. I always make this in a 9x13-inch baking dish—it's perfect for meal prep. Portion into containers before freezing for easy lunches. The crispy topping gets soggy if reheated too long, so keep an eye on it.

Step-by-step instructions for tuna casserole with egg noodles

Here's the method that delivers that perfect creamy texture and crispy topping every time.

Bring a large pot of salted water to a rolling boil. Add the 12 oz egg noodles and cook according to package instructions until 1 minute before they reach al dente. You want them slightly undercooked so they absorb the creamy sauce perfectly later. Drain the noodles and set them aside in a large mixing bowl.

Don't rinse the noodles after draining—this removes the surface starch that helps the sauce cling. I like to give them a quick shake in the colander to remove excess water before transferring. The noodles should still be hot when you mix them with the other ingredients.

In a large oven-safe skillet (I prefer cast iron for even heat distribution), melt 2 tbsp butter over medium heat. Add the diced 1 whole yellow onion and 2 whole celery stalks, cooking for 5-6 minutes until softened and slightly caramelized. Add the 3 cloves minced garlic and cook for another 30 seconds until fragrant.

This step builds the flavor foundation. Don't rush the cooking—you want the vegetables to release their moisture and develop a slight golden color. If the pan starts to stick, reduce the heat slightly and stir more gently. The vegetables should be tender but not mushy.

Reduce the heat to low and stir in the 2 cans cream of mushroom soup, 1 cup milk, 0.5 cup mayonnaise, and 0.5 cup sour cream. Mix until completely smooth. Add the drained egg noodles and gently fold everything together. Stir in the 1 tbsp dried parsley, 1 tsp salt, and 0.5 tsp black pepper. Finally, add the 2 cans drained tuna and mix thoroughly.

Here's where the magic happens. The tuna should be evenly distributed throughout the mixture. If the sauce looks too thick, you can add a splash of milk to loosen it slightly. The mixture should coat the back of a spoon but still be spreadable.

Transfer the entire mixture to a greased 9x13-inch baking dish. Sprinkle the top evenly with 1 cup shredded cheddar cheese and 0.5 cup panko breadcrumbs. Drizzle the melted 2 tbsp butter over the top and use a fork to create peaks in the breadcrumbs for extra crispiness.

Bake at 375°F for 25-30 minutes until the top is deep golden brown and the edges are bubbling. The center should still be slightly jiggly—it will continue cooking after you remove it from the oven. I like to check at the 20-minute mark because ovens vary in temperature accuracy.

Remove the casserole from the oven and let it rest for 10 minutes before serving. This resting period allows the layers to set slightly and makes it easier to slice. The crispy topping will firm up as it cools, but it's still delicious when served warm.

Serve with a side of steamed green beans or a simple garden salad. The contrast of the crispy topping with the creamy interior makes every bite satisfying. Leftovers keep well in the refrigerator for up to 4 days, though I rarely have any left to store!

Health benefits of tuna casserole recipe egg noodles cream of mushroom soup

Protein Power

This tuna casserole packs a surprising 25 grams of protein per serving—thanks to the tuna and cheddar cheese—making it an excellent choice for muscle maintenance and satiety. The protein helps stabilize blood sugar levels, which is particularly helpful for evening meals.

I've found that the combination of tuna and dairy proteins creates a satisfying fullness that keeps me energized well after dinner. 💪

Creamy Comfort Nutrition

The creamy base from the mushroom soup and milk provides healthy fats that support brain function and nutrient absorption. While the dish isn't low-calorie, the inclusion of whole milk and full-fat mayo ensures you're getting beneficial fats rather than refined carbohydrates alone.

I've noticed that this balance keeps me satisfied longer than lighter versions.

Vitamin Boost

You'll get a nice dose of vitamin D from the tuna—about 15% of your daily needs per serving—which supports bone health and immunity. The celery and onion add vitamin K and vitamin C, contributing to collagen production and skin health.

These nutrients work together to create a meal that's not just comforting but also nourishing.

Fiber from the Noodles

While egg noodles aren't typically high in fiber, they still provide some dietary fiber (about 3 grams per serving) that supports digestive health. For a fiber boost, I often add frozen peas or corn to the casserole—this increases the fiber content while adding sweetness that balances the savory flavors.

The fiber helps slow digestion, making the meal more satisfying.

Calcium for Strong Bones

The cheddar cheese topping delivers 20% of your daily calcium needs per serving, which is essential for bone health and muscle function. This makes the dish particularly beneficial for anyone looking to maintain strong bones, especially as we age.

I've found that adding the cheese topping not only enhances flavor but also boosts the nutritional profile significantly. 🧀

Easy to Customize

This casserole can be easily adapted to fit various dietary needs. For a lighter version, I sometimes use low-fat cheese and Greek yogurt instead of sour cream. The base recipe remains flexible enough to accommodate these changes while still delivering satisfying comfort.

The beauty of this dish is its adaptability—you can tweak it to suit your nutritional goals without sacrificing flavor.

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