Classic Tuna Casserole is a comforting American family dinner made with tender pasta, flaky tuna, creamy sauce, vegetables, and a golden cheesy topping. It is simple to prepare, budget-friendly, and perfect for busy weeknights when you want a warm homemade meal without spending hours in the kitchen.
This traditional casserole combines familiar ingredients in one easy dish. The creamy sauce coats the pasta and tuna, while melted cheese adds a delicious golden finish.
Ingredients
- 12 ounces egg noodles or short pasta
- 2 cans of tuna, drained and flaked
- 1 can condensed cream of mushroom soup
- 1 cup milk
- 1 cup frozen peas
- 1/2 cup diced onion
- 1 cup shredded cheddar cheese
- 1/2 cup shredded mozzarella cheese
- 1/2 teaspoon garlic powder
- 1/2 teaspoon black pepper
- 1/2 teaspoon dried parsley
- 1 tablespoon butter
- 1/2 cup breadcrumbs
- Salt to taste
Instructions
1. Cook the Pasta
Bring a large pot of salted water to a boil.
Cook the pasta according to the package instructions until just tender. Avoid overcooking because the pasta will continue cooking in the oven.
Drain the pasta well and set it aside.
2. Prepare the Creamy Sauce
Preheat your oven to 375°F (190°C).
In a large mixing bowl, combine the cream of mushroom soup and milk.
Add the garlic powder, black pepper, dried parsley, and a small amount of salt.
Stir until the mixture is smooth and creamy.
3. Combine the ingredients
Add the cooked pasta, drained tuna, frozen peas, and diced onion to the sauce.
Add half of the shredded cheddar cheese and half of the mozzarella.
Gently mix everything together until the ingredients are evenly coated with the creamy sauce.
4. Prepare the casserole
Lightly grease a baking dish with butter.
Transfer the tuna and pasta mixture into the dish and spread it evenly.
Sprinkle the remaining cheddar and mozzarella cheese over the top.
Add the breadcrumbs evenly over the cheese for a golden, crispy topping.
5. Bake the casserole
Place the casserole in the preheated oven.
Bake for about 25-30 minutes, or until the sauce is hot and bubbling and the top becomes golden brown.
For an extra crispy topping, place the casserole under the broiler for the final 1–2 minutes, watching it carefully.
6. Rest and Serve
Remove the casserole from the oven and let it rest for about 5 minutes before serving.
This gives the creamy sauce a little time to settle and makes the casserole easier to serve.
Serve warm with a fresh green salad, steamed vegetables, or crusty bread.
Tips for the Best Tuna Casserole
Don't Overcook the Pasta
Cook the pasta just until tender. Slightly firm pasta works better because it continues cooking while the casserole bakes.
Drain the Tuna Well
Excess liquid can make the casserole watery. Drain the tuna thoroughly before adding it to the mixture.
Use Freshly Shredded Cheese
Freshly shredded cheddar and mozzarella melt smoothly and give the casserole a better texture.
Add More Vegetables
Frozen peas are classic, but you can also add mushrooms, carrots, corn, celery, or broccoli.
Make the Topping Crispy
Breadcrumbs mixed with a small amount of melted butter can create an especially golden and crunchy topping.
Easy Variations
Tuna Casserole with Mushrooms
Add sliced mushrooms to the mixture for a deeper savory flavor.
Tuna Casserole with Broccoli
Replace some of the peas with small broccoli florets for extra vegetables.
Spicy Tuna Casserole
Add a pinch of red pepper flakes or a small amount of hot sauce for some heat.
Extra Cheesy Tuna Casserole
Use additional cheddar or add Monterey Jack cheese for an even richer topping.
Tuna Casserole Without Mushrooms
If you don't enjoy mushrooms, simply use another creamy soup or add extra vegetables such as peas and corn.
What to Serve With Tuna Casserole
Classic Tuna Casserole is filling on its own, but it pairs well with simple side dishes such as:
- Green salad
- Steamed broccoli
- Roasted vegetables
- Garlic bread
- Dinner rolls
- Simple cucumber salad
A fresh vegetable side can add a lighter contrast to the creamy casserole.
Can You Make Tuna Casserole Ahead of Time?
Yes. Tuna casserole can be assembled ahead of time and kept covered in the refrigerator until you are ready to bake it.
If preparing it ahead, allow the refrigerated casserole to sit at room temperature for a short time while the oven preheats. You may also need to add a few extra minutes to the baking time.
For the best texture, add the breadcrumbs shortly before baking.
How to Store Leftover Tuna Casserole
Allow the casserole to cool before transferring leftovers to an airtight container.
Keep it refrigerated and enjoy within a few days.
Reheat individual portions in the microwave or reheat the casserole gently in the oven until hot throughout.
Avoid repeatedly reheating the entire casserole because this can dry out the pasta and sauce.
Frequently Asked Questions
Can I use a different type of pasta?
Yes. Egg noodles are traditional, but you can use rotini, penne, shells, or another short pasta.
Can I use fresh tuna instead of canned tuna?
Yes, although canned tuna is the classic convenient choice for this casserole. Cooked fresh tuna can also work if it is flaked into small pieces.
Can I make tuna casserole without peas?
Absolutely. You can leave them out or replace them with mushrooms, broccoli, corn, or another vegetable.
Why is my tuna casserole watery?
Too much liquid from the tuna, vegetables, or sauce can make the casserole watery. Drain the tuna well and avoid adding excessive milk.
How do I make the top extra crispy?
Use breadcrumbs mixed with a little melted butter and sprinkle them evenly over the cheese before baking.
Recipe Summary
Final Thoughts
Classic Tuna Casserole is a simple American comfort food that brings together creamy pasta, tender tuna, vegetables, and melted cheese in one satisfying dish.
It is easy enough for a busy weeknight and flexible enough to adapt to whatever vegetables and cheese you have available.
For a classic homemade meal, serve it warm with a fresh salad or steamed vegetables and enjoy this comforting American casserole.