Tuna Casserole Recipe With Egg Noodles and Cream of Mushroom Soup: Cheesy Baked Comfort in One Bowl

This tuna casserole recipe with egg noodles and cream of mushroom soup is the ultimate cheesy, baked comfort dish that brings warmth to any table. 💛 The secret lies in the rich, savory base of the soup—it binds everything together while adding that unmistakable umami depth that makes this casserole so addictive.

I first made this version during a chilly weekend when I needed something hearty and satisfying, and it became an instant family favorite.

What makes this recipe truly special is how effortlessly it comes together. You'll layer tender egg noodles with flaky tuna, melted cheese, and the creamy mushroom soup base, then bake until golden and bubbly.

The result is a dish that's creamy, cheesy, and packed with that nostalgic flavor we all love—no fancy techniques required. The cream of mushroom soup serves as both the glue and the flavor anchor, ensuring every bite is rich and satisfying.

By the time it emerges from the oven, you'll have a dish that's creamy, cheesy, and impossible to resist. The top will be golden and slightly crispy, while the inside remains tender and comforting.

This is the kind of meal that feels like a hug in food form—perfect for feeding a crowd or enjoying a cozy weeknight dinner. The best part? It's ready in under an hour, with minimal prep work.

Serve it with a crisp green salad or some warm garlic bread to soak up every last bit of that creamy sauce. The possibilities for variations are endless—add peas, broccoli, or even some crispy bacon to customize it to your liking.

Let's get started on creating this classic comfort dish that's sure to become a staple in your meal rotation.

Ingredients for tuna casserole recipe egg noodles cream of mushroom soup

Six ingredients make this cheesy tuna casserole the ultimate cozy comfort dish.

The cream of mushroom soup is the secret weapon here—Campbell's Condensed is my go-to, but any good brand works. Look for cans with vibrant color and no dents. The tuna? Wild Planet or StarKist in water (not oil) gives you the best flake. Freshly diced onion and celery add that classic savory base. I always grab the pre-diced mix from the grocery store freezer section—saves time and keeps everything consistent. The garlic? Three cloves is perfect—don't skimp, but don't overdo it either.

No cream of mushroom soup? Homemade mushroom gravy works great—just blend cooked mushrooms with milk and a little flour. Prefer a different cheese? Swiss or Monterey Jack both melt beautifully. For extra richness, stir in a splash of heavy cream with the milk. The egg noodles can be any width, but medium or wide hold up better to the creamy sauce. Pro tip: Toast the noodles in butter for 2 minutes before adding soup—it adds insane texture. And if you're feeling fancy, add a pinch of nutmeg to the cheese layer.

This casserole reheats like a dream—5 minutes at 350°F covered with foil. Leftovers keep for 4 days in the fridge, and freezes beautifully for 3 months. I always make a double batch because it's gone before you know it. For serving, sprinkle extra cheese on top right before baking—it gets all bubbly and golden. Pair with crusty bread to soak up every last bit of that creamy goodness.

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

This cheesy, creamy dish comes together in minutes—just follow these simple steps for maximum comfort.

Bring a large pot of water to a rolling boil and add 2 cups egg noodles. Cook until al dente—about 8-10 minutes—then drain and set aside. I like to rinse them briefly under cold water to stop the cooking process and prevent mushiness later. Don't skip this step—it makes all the difference in texture.

While the noodles cook, melt 0.5 cup butter in a large skillet over medium heat. Add the 1 whole yellow onion and 2 stalks celery (both diced), and sauté for 5-6 minutes until softened. Stir in the 3 cloves minced garlic and cook for another 30 seconds until fragrant. This veggie base adds depth and prevents a bland flavor.

In a large mixing bowl, combine the cooked egg noodles, sautéed vegetables, 2 cans cream of mushroom soup, 0.5 cup milk, 2 cans drained flaked tuna, 1 tsp salt, and 0.5 tsp black pepper. Stir everything together until the tuna and noodles are evenly distributed. The mixture should look creamy but still hold its shape when pressed—this ensures it doesn't turn into a soup when baked.

Here's the thing—don't overmix. Just combine until the tuna is fully incorporated. Overworking the noodles can make them gummy, and we want that perfect cheesy texture. Taste a spoonful now to check the seasoning. If it needs more salt or pepper, adjust it before adding the cheese.

Transfer the noodle mixture to a greased 9x13-inch baking dish. Sprinkle the 2 cups shredded sharp cheddar cheese evenly over the top, pressing down gently so it melts into the casserole instead of staying on the surface. The cheese should look like it's nestled into the noodles—this creates that irresistible stretchy, gooey texture we all love.

Bake at 375°F for 20-25 minutes until the top is golden brown and bubbly. The edges should be crispy while the center stays creamy—this is your visual cue it's done. If the top browns too quickly, tent it loosely with aluminum foil for the last 5 minutes to prevent over-browning.

Let the casserole rest for 5 minutes after baking—this helps the cheese set slightly and makes it easier to serve. Then, sprinkle with the 2 whole sliced green onions for a fresh pop of color and brightness. The green onions add a subtle crunch that cuts through the richness of the cheddar and tuna.

Serve immediately while warm, straight from the baking dish. I like to scoop it onto plates with a spatula, letting that gooey cheese pull into strings. Pair it with a simple side salad or crusty bread to soak up any extra sauce. This dish tastes even better the next day, but it's hard to wait!

Creative variations of tuna casserole recipe egg noodles cream of mushroom soup

Creamy Mushroom Twist

Swap the classic cream of mushroom soup for a homemade version by blending 1 cup sautéed mushrooms (cremini or white) with ½ cup milk and 1 tbsp flour. For extra richness, stir in 1 tbsp butter and a pinch of nutmeg—this adds depth without canned soup’s preservatives.

I love using fresh wild mushrooms from the market for that earthy flavor. 🍄

Spicy Kick

Add ½ tsp smoked paprika or ¼ tsp cayenne pepper to the noodle mixture for warmth. For a smoky touch, stir in 1 tbsp chipotle powder> with the cheese layer.