Soups & Stews
This Campbell's mushroom soup tuna casserole recipe brings back the comforting flavors of childhood dinners with a modern twist. The creamy mushroom soup base blends seamlessly with tender tuna and pasta, creating a dish that's both nostalgic and satisfying.
I've perfected this recipe to deliver that crispy cheese topping everyone loves while keeping the filling rich and flavorful.
The beauty of this recipe lies in its simplicity—just a handful of ingredients that come together in one pan for minimal cleanup. The Campbell's mushroom soup provides the creamy foundation, while canned tuna adds protein and convenience.
A layer of melted cheese on top creates that satisfying crunch, and the dish bakes up perfectly tender every time.
What you'll end up with is a comforting, cheesy casserole that's ideal for family dinners or potlucks. The crispy cheese topping contrasts beautifully with the creamy filling, and the flavors are rich enough to stand alone or pair with a simple side salad.
This recipe delivers restaurant-quality comfort food in under an hour.
Ready to recreate this classic dish with a modern touch? The instructions are straightforward, and the results are consistently delicious. Whether you're feeding a crowd or just craving comfort food, this tuna casserole delivers satisfaction in every bite.
Ingredients for campbells mushroom soup tuna casserole
Six servings of nostalgic comfort in one pan, blending creamy soup, tender tuna, and crispy cheese topping.
| Ingredient | Amount | Notes |
|---|---|---|
| Campbell's Cream of Mushroom Soup 🍄 | 2 cans | Condensed, 10.5 oz each |
| Egg Noodles 🍝 | 2 cups | Uncooked, medium width |
| Canned Tuna 🐟 | 2 cans | Albacore, drained well |
| Yellow Onion 🧅 | 1 medium | Diced into 1/4-inch pieces |
| Milk 🥛 | ½ cup | Whole milk preferred |
| Butter 🧈 | ½ cup | Unsalted, melted |
| Shredded Cheddar Cheese 🧀 | 2 cups | Freshly shredded preferred |
| Breadcrumbs 🍞 | ½ cup | Plain, dry, panko style |
| All-Purpose Flour 🌾 | ¼ cup | For crispy topping |
| Salt 🧂 | 1 tsp | Diamond Crystal preferred |
| Black Pepper 🌶️ | ½ tsp | Freshly ground |
| Garlic Powder 🧄 | ½ tsp | For seasoning |
| Dried Parsley 🌿 | 1 tsp | For garnish |
The Campbell's mushroom soup is the foundation here, so grab the condensed version—it delivers that rich, velvety texture without thinning. For the tuna, albacore is ideal for its buttery texture and higher fat content, though regular works in a pinch. The egg noodles should be medium width to hold up well during baking. Whole milk enhances the creaminess, while unsalted butter adds richness without altering the seasoning balance. When selecting cheese, freshly shredded cheddar melts more smoothly than pre-shredded varieties, which often contain anti-caking agents that prevent proper melting.
No Campbell's mushroom soup? Homemade cream of mushroom soup works beautifully—simmer mushroom stems, onions, garlic, and cream until tender, then blend with milk and butter. Substituting canned tuna? Chicken or turkey works equally well, though the texture will differ slightly. For a dairy-free option, coconut milk replaces whole milk, though the flavor profile shifts. The crispy topping can be made ahead by mixing breadcrumbs, flour, and seasonings—store in an airtight container for up to 5 days. If you're short on time, pre-made stuffing mix can replace the breadcrumb topping, though it lacks the same crunch.
This casserole reheats beautifully—just cover with foil and bake at 350°F for 15-20 minutes. For meal prep, assemble the dish (without the topping) up to 2 days ahead and refrigerate. When ready to bake, add the topping and bake as directed. The leftovers keep well in the fridge for 4-5 days, though the crispy topping loses its crunch after reheating. To maintain texture, reheat portions separately and add the topping fresh from the oven.
Why You'll Love This Recipe
- I’ll be real: this recipe won’t break the bank. A can of soup, a box of noodles, and some tuna? That’s less than $10 for four servings. Plus, leftovers taste just as good cold in a sandwich—my kids’ new favorite lunch.
- Five-Ingredient Magic: I swear, this casserole proves you don’t need a fancy pantry to make something special. Just open a can of soup, drain some tuna, and toss in pre-cooked noodles—no chopping, no waiting for pasta to boil. The onion adds just enough depth without extra work.
- Weeknight Workhorse: Between us, this is my go-to when I’m exhausted but still need to feed the family. It reheats beautifully for lunch the next day, and I’ve even made a double batch for potlucks—no one ever guesses how little effort went into it.
- Budget Breakthrough: I’ll be real: this recipe won’t break the bank. A can of soup, a box of noodles, and some tuna? That’s less than $10 for four servings. Plus, leftovers taste just as good cold in a sandwich—my kids’ new favorite lunch.
Step-by-step instructions for Campbell's mushroom soup tuna casserole
Here's how to assemble this comforting classic with a golden, crispy topping every time.
Cook the Egg Noodles Al Dente
Bring a large pot of salted water to a rolling boil. Add the 2 cups egg noodles and cook according to package instructions until 1 minute before al dente—they'll finish cooking in the oven. The noodles should be tender but still hold their shape with a slight bite. Drain thoroughly and set aside, reserving ½ cup pasta water in case the casserole needs loosening later.
I always test the noodles at the 1-minute early mark because they'll absorb additional moisture from the soup mixture. Overcooking them here leads to a mushy final texture. Rinse the drained noodles briefly under cold water to stop the cooking process completely before mixing.
Prepare the Cheesy Tuna Mixture
In a large mixing bowl, combine the 2 cans Campbell's Cream of Mushroom Soup, 2 cans drained canned tuna, 1 medium yellow onion, 0.5 cup milk, 0.5 cup melted butter, 2 cups shredded cheddar cheese, 1 tsp salt, 0.5 tsp black pepper, and 0.5 tsp garlic powder. Stir until the cheese is fully melted and the mixture is smooth and well combined.
The soup should be thick enough to coat the back of a spoon but still pourable. If it's too stiff, add 1-2 tablespoons of reserved pasta water to achieve a creamy, spreadable consistency. This mixture forms the heart of your casserole, so take your time ensuring all ingredients are evenly distributed.
Assemble and Bake the Casserole
Preheat your oven to 375°F. Grease a 9x13-inch baking dish and spread the cooked egg noodles evenly across the bottom. Pour the cheesy tuna mixture over the noodles, pressing down gently to ensure even distribution. This layering prevents a watery bottom while keeping the noodles submerged in flavor.
Bake uncovered for 25 minutes until the edges begin to bubble and the top develops a soft golden hue. The center should still look slightly underdone at this stage—this prevents a dry, overcooked final product. Remove from the oven and let cool for 5 minutes before adding the topping.
Create the Crispy Topping
In a small bowl, mix together the 0.5 cup breadcrumbs, 0.25 cup all-purpose flour, 1 tsp dried parsley, and an additional 0.25 tsp salt to enhance flavor. Sprinkle this evenly over the baked casserole, pressing down lightly with the back of a spoon to help it adhere.
Return the casserole to the oven and bake for an additional 15-20 minutes until the topping is deep golden brown and crispy. The internal temperature should reach 165°F when measured in the center. If the topping browns too quickly, tent loosely with foil to prevent burning while allowing it to crisp.
Rest and Serve
Remove from the oven and let rest for 10 minutes before serving. This resting period allows the juices to redistribute throughout the casserole, ensuring each bite is moist and flavorful. The crispy topping will firm up slightly as it cools, but it remains delightfully crunchy when served immediately.
Cut into squares and serve warm with a side of steamed green beans or a simple garden salad. The combination of creamy mushroom soup, tender tuna, and crispy topping creates a nostalgic dish that's perfect for family dinners or meal prep. Store leftovers covered in the refrigerator for up to 4 days or freeze for 3 months.
Pro Tips For Making Campbells Mushroom Soup Tuna Casserole
- Preheat That Pan: I learned this the hard way—skipping preheating means the onions just sit there, turning your casserole into a sad, watery mess. Get a heavy skillet or pot hot over medium before adding the onion, and you’ll get real color and flavor in 3-4 minutes instead of 10.
- Drain Tuna Properly: That extra liquid in canned tuna is the silent killer of texture. Drain it, then press it between paper towels to squeeze out every last drop—yes, even if it feels excessive. Your casserole won’t turn into a tuna soup surprise later.
- Stir the Soup First: Campbell’s soup always settles with a thick layer at the bottom. Give the can a good shake before opening, then whisk it with a splash of milk right in the pot. This keeps the sauce silky and prevents clumpy noodles later—no one wants to chew mystery lumps.
- Cover and Rest: After baking, resist the urge to dig in immediately. Tent the casserole with foil and let it sit for 5-10 minutes. The noodles finish absorbing the sauce, and the tuna stays warm instead of turning rubbery—trust me, it’s worth the wait.
Essential equipment for campbells mushroom soup tuna casserole
Must-Have Baking Dish
A 9x13-inch baking dish is essential for this recipe—it provides the perfect surface area for even baking and a crispy topping. I recommend using a ceramic or glass dish (like Pyrex) because they distribute heat more evenly than metal.
If you don't have one, a heavy-duty aluminum pan works too, but it may require slightly longer baking time. Avoid dark-colored pans—they can cause the bottom to overbrown. 🔥
Mixing Bowls
Use a large mixing bowl (at least 3-quart capacity) to combine the tuna mixture. I prefer stainless steel or glass bowls because they’re easy to clean and don’t retain odors. For the crispy topping, a small 2-cup bowl works best to mix the breadcrumbs, flour, and seasonings.
If you’re short on space, a measuring cup with a lid doubles as a mixing container.
Measuring Tools
Precision matters for this casserole, so invest in a set of stainless steel measuring cups and spoons. For the cheese, a microplane or box grater ensures even shreds that melt smoothly. I also recommend a kitchen scale for accuracy—especially when measuring breadcrumbs and flour for the crispy topping.
A fine-mesh strainer helps drain the tuna properly, removing excess liquid for a drier filling. 💡
Oven Thermometer
Ovens vary wildly in accuracy, so a digital oven thermometer (like the Thermoworks Oven Thermometer) is a game-changer. Place it near your baking dish to confirm your oven hits 375°F—many ovens run 25°F hotter or cooler than set.
This ensures the casserole bakes evenly and the topping crisps perfectly without burning. I’ve ruined countless casseroles due to an inaccurate oven reading before learning this trick.
Optional Upgrades
For extra convenience, a handheld immersion blender helps smooth out the soup mixture if it gets lumpy. A pasta fork or tongs makes layering noodles in the baking dish easier, while a spray bottle with water helps press down the crispy topping for better adhesion.
If you love crispy textures, a pizza stone or baking steel placed on the oven rack can add extra crunch to the topping—just transfer the casserole onto it for the final 5 minutes of baking. ✨
Nutrition facts
Frequently asked questions
Can I make this casserole ahead of time?
Assemble the dish (without the crispy topping) up to 2 days ahead and refrigerate. When ready to bake, add the breadcrumb mixture and bake as directed. For freezing, assemble completely (including topping) and freeze for up to 3 months. Thaw overnight in the fridge before reheating at 350°F for 30 minutes, covered with foil.
What if I don't have Campbell's mushroom soup?
No problem! Use homemade cream of mushroom soup (simmer mushrooms, onions, garlic, and cream until tender, then blend) or substitute with cream of celery soup for a different flavor profile. For a dairy-free option, swap the milk for coconut milk, though the texture will be slightly different.
How do I fix a soggy crispy topping?
Soggy topping usually happens from moisture escaping during baking. To prevent it, bake the casserole uncovered for the first 25 minutes to let excess moisture evaporate before adding the topping. For extra insurance, sprinkle a thin layer of flour on the casserole before adding the breadcrumb mixture. If it's already soggy, broil for 1-2 minutes to crisp it up.
Can I add vegetables to this recipe?
Yes! Finely chopped peas, corn, or bell peppers work well in the filling. For extra texture, add sautéed mushrooms or onions> to the soup mixture. Just make sure to drain excess liquid from any fresh veggies to avoid a watery casserole.
Why did my casserole turn out dry?
Overbaking is the most common cause. Remove the dish from the oven when the center reaches 165°F—it will continue cooking slightly as it rests. Another tip: undercook the noodles by 1 minute before draining, as they'll finish in the oven. For extra moisture, stir 2 tablespoons of milk or broth into the filling before baking.