Soups & Stews
This Campbell's Mushroom Soup Tuna Noodle Casserole recipe delivers the nostalgic comfort of childhood dinners with minimal effort. The secret lies in perfectly layered ingredients—creamy mushroom soup, tender noodles, and flaky tuna—all baked until the cheese bubbles into golden perfection.
I've tested this recipe countless times to ensure the right balance of textures and flavors that make it a family favorite.
The beauty of this dish is its simplicity: just a handful of pantry staples and 30 minutes in the oven transform basic ingredients into a hearty, satisfying meal.
The key steps—draining noodles properly, mixing tuna with mayo and mustard for extra flavor, and layering everything just right—ensure every bite is rich, cheesy, and comforting. This is the kind of recipe that feels like a warm hug on a chilly evening.
What you'll end up with is a bubbling, golden casserole with crispy cheese topping and creamy mushroom-tuna filling that melts in your mouth. The aroma alone will have everyone gathering around the table, and the first bite delivers that nostalgic taste of classic comfort food.
It's the perfect dish for busy weeknights when you want something hearty without the fuss.
While this recipe delivers classic results, it's also customizable—swap in different cheeses, add veggies, or adjust the spice level to suit your family's tastes. The instructions walk you through every step to ensure foolproof success. Let's get started on this timeless comfort dish!
Ingredients for campbell's mushroom soup tuna noodle casserole
Classic comfort starts with these simple pantry staples—creamy soup, cheesy layers, and flaky tuna.
| Ingredient | Amount | Notes |
|---|---|---|
| Campbell's Cream of Mushroom Soup 🍄 | 2 cans | Condensed, 10.5 oz each |
| Egg Noodles 🍝 | 2 cups | Uncooked, medium width |
| Flaked Tuna 🐟 | 2 cans | 5 oz each, in water |
| Mayonnaise 🥛 | ½ cup | Full-fat preferred |
| Yellow Mustard 🍯 | 1 tbsp | Dijon works too |
| Shredded Cheddar Cheese 🧀 | 2 cups | Medium sharp preferred |
| Milk 🥛 | ¼ cup | Whole milk for creaminess |
| Butter 🧈 | ½ cup | Unsalted, melted |
| Salt 🧂 | ½ tsp | Kosher or sea salt |
| Black Pepper 🌶️ | ¼ tsp | Freshly ground preferred |
| Garlic Powder 🧄 | ½ tsp | For subtle depth |
| Onion Powder 🧅 | ½ tsp | Enhances flavor |
| Breadcrumbs 🍞 | ½ cup | Panko for extra crunch |
The Campbell's Mushroom Soup is the heart of this dish—stick with the classic condensed version for that authentic taste. Most grocery stores carry it, but Costco often has it at a better price if you're making multiple batches. For the tuna, flaked in water gives the best texture, though oil-packed works in a pinch. The egg noodles should be medium width—wide ones hold the filling better, while thin ones work if that's what you've got. I always grab extra cheese since it's the star of this dish—medium sharp cheddar melts perfectly, but a mix of cheddar and Monterey Jack adds extra creaminess.
No mayo? Greek yogurt works in a pinch for a lighter version, though the texture will differ slightly. Running short on cheddar? Colby Jack or mozzarella both work well. The breadcrumbs are optional but add that perfect crispy topping—panko gives extra crunch, while regular breadcrumbs work fine. For the tuna mixture, don't drain the cans completely—leave about 1 tbsp of liquid per can to keep the flakes moist. The garlic and onion powders are subtle but essential—skip them only if you're sensitive to strong flavors. Freshly ground black pepper always tastes better than pre-ground, but it's not a dealbreaker here.
This casserole reheats beautifully—best served warm from the oven, but leftovers taste great the next day. Store in an airtight container for up to 4 days in the fridge. For meal prep, assemble it ahead and bake when ready—the flavors meld even better overnight. The cheese topping gets crispy, so cover it loosely with foil if you're reheating. Freezes well for up to 3 months—just thaw in the fridge overnight before reheating. Portion into individual servings before freezing for easy grab-and-bake meals.
Why You'll Love This Recipe
- I’ll be real: this feeds four for under $10. Campbell’s soup does the heavy lifting, the tuna adds protein without breaking the bank, and egg noodles? Cheap and reliable. It’s the kind of recipe that makes grocery day feel like a victory. (Yes, even on a Tuesday night.)
- One-Pan Magic: I swear by this recipe when I’m too tired to scrub pots. Toss the cooked egg noodles with Campbell’s soup, flaked tuna, and that mayo-mustard mix—then bake. No boiling over, no sticking, no stress. The creamy mushroom sauce clings to everything like it’s been simmering for hours.
- Tuna Twist: Between us, the mayo and mustard might sound weird, but they’re the secret. The mustard cuts through the richness of the soup while the mayo gives the tuna a tender, almost "baked" texture. It’s not just tuna noodle casserole—it’s better tuna noodle casserole.
- Lunchbox Hero: Honestly, this is my go-to for meal prep. The leftovers reheat like a dream (microwave or oven, no judgment), and the portions are perfect for lunches. Pack it cold or warm—either way, it’s the kind of dish that makes people pause mid-bite and ask, "What’s in this?"
Step-by-step instructions for Campbell's mushroom soup tuna noodle casserole
Here's the classic method that delivers creamy, cheesy perfection every time.
Cook the Egg Noodles Al Dente
Bring a large pot of water to a rolling boil and add the 2 cups egg noodles. Cook according to package instructions until they are 1 minute shy of al dente—they'll finish cooking in the oven. Drain thoroughly and set aside, reserving ½ cup of pasta water in case the casserole needs thinning later.
This slight undercooking ensures the noodles absorb the creamy mushroom mixture perfectly without becoming mushy. I always use medium-width noodles as they hold up better to the baking process and provide a satisfying bite.
Prepare the Tuna Mixture
In a large mixing bowl, combine the 2 cans flaked tuna, 0.5 cup mayonnaise, 1 tablespoon yellow mustard, 0.25 cup milk, 0.5 cup melted butter, 0.5 teaspoon salt, 0.25 teaspoon black pepper, 0.5 teaspoon garlic powder, and 0.5 teaspoon onion powder. Mix thoroughly until all ingredients are evenly distributed and the tuna is fully coated.
The mayonnaise and milk create a creamy base that binds everything together, while the melted butter adds richness. Don't skip mixing well—this ensures every bite has that classic tuna noodle flavor. The spices should be completely dissolved, not just sprinkled on top.
Combine All Ingredients
In a large casserole dish (about 8x8 inches), combine the cooked egg noodles and the tuna mixture. Stir gently but thoroughly to ensure even distribution. Then sprinkle the 2 cups shredded cheddar cheese evenly over the top, pressing it lightly into the mixture so it melts into the casserole rather than floating on top.
This layering technique guarantees that every forkful gets that perfect cheesy pull. I like to use medium-sharp cheddar for the right balance of tang and creaminess. If you're concerned about the cheese not melting completely, you can cover the dish with foil before baking.
Bake Until Bubbly and Golden
Preheat your oven to 350°F. Sprinkle the 0.5 cup breadcrumbs evenly over the top of the casserole. Bake uncovered for 25-30 minutes until the top is golden brown and the casserole is bubbling vigorously around the edges.
Here's the thing—don't peek too early. The breadcrumbs need time to toast while the cheese melts completely. You'll know it's done when the edges are bubbling and the center has just started to set. If the top browns too quickly, tent it loosely with foil for the last 5-10 minutes.
Rest Before Serving
Remove the casserole from the oven and let it rest for 10 minutes before serving. This resting period allows the cheese to set slightly and makes it easier to slice without everything falling apart. The casserole will continue to firm up as it cools, so don't worry if it looks slightly runny when you take it out.
Serve warm with a side of steamed vegetables or a simple green salad. The flavors meld beautifully as it sits, making each bite even more comforting. Leftovers keep well in the refrigerator for up to 3 days, though I doubt you'll have any—this classic dish disappears quickly!
Pro Tips For Making Campbell'S Mushroom Soup Tuna Noodle Casserole
- Drain noodles cold: Skip the hot water rinse—drain those egg noodles straight into an ice bath for 30 seconds. The shock stops them from turning mushy when they hit the cold soup mixture, and the texture stays firm. (Yes, it feels dramatic, but your casserole will thank you.)
- Mix mayo last: Fold in the mayonnaise and mustard right before baking, not when you first combine everything. The heat will break down the mayo faster if you add it too early, making your casserole greasy instead of creamy. Stir it in gently—just until mixed—so it doesn’t get overworked.
- Use canned tuna in oil: Drain the tuna and pat it dry with a paper towel—especially if it’s packed in oil. Wet tuna makes the casserole soggy, and the extra fat can turn the top layer greasy. A quick press gets rid of enough moisture to keep things stable without drying out the flakes.
- Bake uncovered first: Start with 10 minutes uncovered at 375°F to let the top set and brown. This prevents a gummy crust from steam buildup, and you’ll get that golden finish everyone expects. Cover only after that initial crisping—otherwise, you’re just trapping moisture and turning your casserole into a soup.
Make-ahead tips for this campbell's mushroom soup tuna noodle casserole
Assemble Ahead
This casserole shines when prepped in advance—just mix the tuna filling and layer the noodles up to 24 hours before baking. Store the uncooked casserole in an airtight container in the fridge.
When ready to bake, add the cheese topping and pop it in the oven. The flavors meld beautifully overnight, making it even more comforting when served. 💫
Freezer-Friendly Prep
For maximum convenience, assemble the entire casserole (including cheese) and freeze it raw. Use a freezer-safe baking dish and cover tightly with plastic wrap and foil. Thaw overnight in the fridge, then bake as directed—just add 5-10 extra minutes to the cooking time.
The texture remains creamy, not soggy, when reheated properly. Perfect for busy weeknights!
Portion for Easy Serving
Divide the baked casserole into individual serving containers before freezing. Reheat each portion covered in the microwave for 2-3 minutes or in the oven at 350°F for 10-15 minutes.
This makes it ideal for meal prep—just grab and reheat without defrosting the whole dish. I always keep a few portions on hand for lazy days.
Cheese Topping Hack
For an extra crispy topping, mix ¼ cup milk into the breadcrumbs before sprinkling. This creates a wetter, more adhesive layer that browns beautifully. Another trick: press a few slices of American cheese on top during the last 5 minutes of baking for a gooey, melty finish.
The contrast with the creamy filling is unbeatable. 🧀
Make-Ahead Baking
If you're short on time, assemble the casserole in the morning and refrigerate. Bake it straight from the fridge—just add 10-15 extra minutes to the cooking time. The cold start helps prevent over-browning while ensuring the center gets fully heated.
This is my go-to strategy for last-minute dinners. Always check the internal temperature reaches 165°F for safety.
Leftovers Strategy
Store leftovers in glass containers with tight lids to maintain freshness for up to 4 days. Reheat portions covered with a damp paper towel in the microwave for 1-2 minutes, stirring halfway.
For best results, transfer to an oven-safe dish and warm at 350°F for 10 minutes to restore that crispy topping. The reheated version tastes nearly as good as fresh!
Nutrition facts
Frequently asked questions
Can I use oil-packed tuna instead of water-packed?
Yes, but drain the tuna very thoroughly to avoid making the casserole too greasy. Oil-packed tuna adds richness, so you might want to reduce the mayo slightly (¼ cup instead of ½ cup) to balance the flavors. The texture will be slightly different but still delicious!
How do I prevent the casserole from getting watery?
Drain the noodles completely and press them gently with a paper towel to remove excess moisture. Also, make sure the tuna mixture is well-drained and patted dry. If the casserole seems too thin after baking, sprinkle 1 tablespoon cornstarch over the top before adding breadcrumbs.
Can I make this dish in a slow cooker?
Layer the noodles, tuna mixture, and cheese in a slow cooker, then sprinkle breadcrumbs on top. Cook on low for 2 hours or high for 1 hour, covered. The texture will be creamier (not crispy), but equally comforting. Just stir gently before serving.
What's the best cheese substitute if I don't have cheddar?
Try Monterey Jack for a milder flavor or Colby for a creamier melt. For extra richness, mix cheddar with ½ cup cream cheese before baking. Avoid pre-shredded cheese (it contains anti-caking agents that prevent proper melting).
How do I reheat leftovers without drying it out?
Cover the casserole with a damp paper towel and microwave for 1-2 minutes on medium power. For oven reheating, cover with foil and bake at 350°F for 10 minutes. Add 1-2 tablespoons milk before reheating to restore creaminess. The crispy topping won't return, but the texture stays tender.