This tuna casserole with egg noodles is a creamy, comforting oven-baked dinner made with tender noodles, flaky tuna, peas, and mushroom soup under a crisp buttery breadcrumb topping. It is simple to assemble, dependable for busy evenings, and made with familiar pantry staples.
When you need a practical dinner that does not require a long ingredient list, this classic casserole is a reliable choice. The creamy mushroom base coats every noodle while the tuna makes the dish hearty enough to serve as a complete main course.
The finishing layer is what gives the casserole its contrast. Instead of adding the breadcrumbs at the beginning, you scatter the buttered crumbs over the hot casserole near the end of baking. That short final bake helps them become golden and crisp without soaking up too much moisture from the filling.
It is also a convenient dish for feeding a family because most of the preparation happens in one mixing bowl. Once the noodles are cooked and drained, everything comes together quickly before going into a 9 × 13-inch baking dish.
Tuna Casserole Recipe Ingredients
You only need a handful of straightforward ingredients to build the creamy filling and crunchy topping.
- Egg noodles: These create the soft, tender base of the casserole. Cook them according to the package directions before assembling the dish.
- Chunk light tuna: Two drained cans provide the main savory flavor and make the casserole satisfying without requiring any additional meat.
- Condensed cream of mushroom soup: This forms the creamy sauce and binds the noodles, peas, and tuna together as they bake.
- Whole milk: Milk loosens the condensed soup and gives the casserole a smoother consistency. Bringing it to room temperature helps it blend easily with the other ingredients.
- Peas: Drained canned peas add color, mild sweetness, and a soft vegetable element throughout the casserole.
- Kosher salt and black pepper: Simple seasoning is all the creamy filling needs. Freshly ground pepper gives the finished dish a more noticeable peppery flavor.
- Breadcrumbs: Plain dry breadcrumbs create the crisp topping. Panko can be used when you want a coarser and crunchier finish.
- Unsalted butter: Melted butter coats the crumbs so they brown evenly during the final few minutes in the oven.
Cooking Steps
STEP 1: Heat your oven to 400°F. Cook the egg noodles according to the directions on their package, stopping once they are tender rather than excessively soft. Drain them thoroughly, then give them a quick rinse with cool water. This stops the cooking and helps the noodles hold their shape once they go into the oven.
STEP 2: Prepare the topping before assembling the casserole. Stir the melted unsalted butter into the dry breadcrumbs until the crumbs are evenly moistened. They should look lightly coated rather than saturated with butter. Set this mixture aside because it will not be added until the casserole has nearly finished baking.
STEP 3: Place the cooked noodles in a large mixing bowl with the well-drained tuna and peas. Add the condensed mushroom soup and room-temperature whole milk. Fold everything together until the sauce is evenly distributed and the tuna and peas are spread throughout the noodles. Season with kosher salt and freshly ground black pepper according to your preference.
STEP 4: Lightly grease a 9 × 13-inch baking dish. Transfer the creamy noodle mixture into the dish, spreading it into a relatively even layer so it heats consistently from the center to the edges.
STEP 5: Bake the casserole uncovered for about 20 minutes. At this point, the filling should be hot and you should begin to see gentle bubbling around the edges of the baking dish.
STEP 6: Remove the casserole carefully from the oven and scatter the buttered breadcrumb mixture evenly over the entire surface. Return it to the oven for approximately 5 additional minutes, or until the topping is crisp and lightly golden.
STEP 7: Let the casserole stand briefly after baking before spooning it onto plates. A short rest gives the creamy filling a chance to settle and makes serving a little neater while still keeping everything hot.
What to Serve with Tuna Casserole
Because this casserole already contains noodles, tuna, peas, and a creamy sauce, simple side dishes work particularly well. You do not need anything overly rich alongside it.
- Green salad: A crisp salad with a light, tangy dressing provides a fresh contrast to the creamy mushroom sauce.
- Roasted vegetables: Broccoli, green beans, or carrots add extra vegetables without competing with the mild flavors of the casserole.
- Steamed vegetables: Lightly steamed asparagus or broccoli is another uncomplicated option when you want to keep dinner straightforward.
Can I use panko instead of regular breadcrumbs?
Yes. Panko is a good substitute for plain dry breadcrumbs and will generally give the topping a lighter, more noticeably crunchy texture. Coat it with the same melted butter before scattering it over the casserole. Keep an eye on the topping during the final bake because larger crumbs can brown quickly.
Why are the breadcrumbs added near the end?
Adding the topping only for the final few minutes keeps the crumbs from absorbing too much moisture from the creamy filling. The casserole first has time to become thoroughly hot, and then the breadcrumb layer can crisp and brown without spending the entire baking time exposed to the oven.
How do I keep the egg noodles from getting mushy?
Avoid overcooking the noodles before assembling the casserole. Cook them only until tender, drain them well, and briefly rinse them with cool water to stop residual cooking. Remember that the noodles will spend another 25 minutes in the oven, so they do not need to be extremely soft beforehand.
Can I make tuna casserole ahead of time?
You can assemble the creamy noodle mixture in the baking dish ahead of time and keep it covered in the refrigerator. For the best texture, store the buttered breadcrumbs separately and add them toward the end of baking. A chilled casserole may require a little additional oven time to become hot throughout.
How can I tell when the casserole is ready?
The filling should be thoroughly heated with visible bubbling near the edges after the initial baking period. Once the breadcrumbs are added, continue baking until the surface looks dry, crisp, and lightly golden. Since the main ingredients are already cooked, the goal is primarily to heat the filling and brown the topping.
Helpful Tips
- Drain the tuna and peas thoroughly. Excess liquid can thin the mushroom sauce and leave water collecting around the noodles instead of producing a creamy casserole.
- Keep the topping separate until the final bake. This small step makes a noticeable difference in the texture because the breadcrumbs remain crisp rather than becoming soft in the sauce.
- Use room-temperature milk when possible. It incorporates smoothly into the condensed mushroom soup and helps you create a more uniform sauce before the casserole goes into the oven.
Keeping Leftovers Fresh
Allow leftover casserole to cool before transferring it to an airtight container or covering the baking dish securely. Store it in the refrigerator for up to 3 to 4 days.
For individual portions, reheating in the microwave is the quickest option. Place a serving on a microwave-safe plate and warm it in short intervals until heated throughout. The filling will remain creamy, although the breadcrumb topping will naturally become softer.
If maintaining the crunchy topping is more important, reheat the casserole in an oven-safe dish at about 350°F until hot. Keeping it uncovered for at least part of the reheating time can help dry and crisp the breadcrumb layer again.
The casserole can also be frozen, although the noodles and creamy mushroom sauce may be somewhat softer after thawing. Store cooled portions in freezer-safe containers for about 2 to 3 months. Thaw overnight in the refrigerator before reheating for the most even results.
For the freshest texture, this is a casserole that is especially good during the first few days after baking. The tender noodles, creamy tuna filling, sweet peas, and crisp buttery crumbs give you the familiar contrast that makes this simple oven dinner such a dependable comfort-food meal.
Tuna Casserole with Egg Noodles
Ingredients
For the casserole:
- 2 cans 5 ounces each chunk light tuna, thoroughly drained
- 1 cup whole milk brought to room temperature
- 1 can 15 ounces peas, drained well
- Freshly ground black pepper to taste
- 2 cups prepared egg noodles equivalent to approximately 4 ounces uncooked
- 1 can condensed cream of mushroom soup
- Kosher salt to taste
For the topping:
- 1/3 cup plain dry breadcrumbs; panko may also be used for a crunchier texture
- 2 tablespoons unsalted butter melted
Instructions
- Heat the oven to 400°F. Cook the egg noodles according to the package instructions, then transfer them to a colander and drain thoroughly. Rinse briefly under cold water to halt the cooking process and help prevent the noodles from becoming overly soft during baking.
- Place the dry breadcrumbs in a small bowl and pour in the melted unsalted butter. Stir until the crumbs are uniformly coated and have a texture similar to damp sand. Reserve the mixture for the topping.
- Add the cooked egg noodles, drained tuna, drained peas, condensed cream of mushroom soup, and room-temperature whole milk to a large mixing bowl. Stir until the ingredients are fully combined and the mushroom soup is evenly incorporated throughout the mixture. Season as desired with kosher salt and freshly ground black pepper.
- Lightly grease a 9 × 13-inch baking dish. Spoon the tuna and noodle mixture into the prepared dish and distribute it in an even layer. Bake uncovered at 400°F for 20 minutes, or until thoroughly heated and beginning to bubble around the edges.
- Carefully remove the baking dish from the oven. Scatter the buttered breadcrumb mixture evenly across the surface of the casserole. Return the dish to the oven and continue baking for 5 minutes, until the topping develops a crisp, golden-brown finish.