Simple Tuna Casserole Recipe


At the end of a long day when you're hungry and too tired to cook anything complicated, tuna casserole comes to the rescue. As a dish that's both delicious and simple to make, tuna casserole with chips is a welcome standby dinner for busy couples and families. What's more, you can improvise with many of the ingredients in a tuna casserole recipe, swapping pasta for noodles or leftover cooked chicken for tuna. The same applies if you're watching your fat or sodium intake and want to replace the regular ingredients with low-fat or low-salt alternatives.

Tuna Casserole Recipe

Total Time: 45 minutes | Prep Time: 15 minutes | Serves: 6


  • 5 cups egg noodles
  • 1 cup frozen peas
  • 3 ounces Parmesan cheese
  • 1/4 onion
  • 1/2 green pepper
  • 1 (10 3/4-ounce) can cream of mushroom soup
  • 1 cup sour cream
  • 1/3 cup milk
  • 2 (5-ounce) cans tuna (any kind of canned tuna will do)
  • 1/4 teaspoon kosher salt
  • Cooking oil spray
  • 1 cup crushed plain-flavored potato chips (you can also use flavored potato chips if the flavor isn't too different from the flavors in the dish)


  1. Heat your oven to 350 degrees Fahrenheit.

  2. Boil water in a saucepan and cook the egg noodles until they begin to soften. 

  3. Add the frozen peas to the saucepan. When the water returns to boiling, wait another minute and then drain the noodles and peas in a sieve or colander. The noodles should be soft but retain some "bite." They'll soften some more in the oven as the casserole bakes, so don't cook them for too long, or they will turn mushy in the casserole.

  4. Finely grate the Parmesan cheese into a bowl.

  5. Finely chop the onion and green pepper.

  6. Pour the can of mushroom soup into a large bowl and add the sour cream, milk, Parmesan cheese, onion, green pepper, 2 cans of tuna (drain the tuna first) and salt.

  7. Mix all the ingredients until they're evenly distributed. You might have to break up the tuna a little with a fork.

  8. Add the egg noodles and peas to the bowl and gently toss them to mix them into the other ingredients.

  9. Coat an 11-by-7-inch baking dish with cooking oil spray or wipe vegetable oil over the inner surface. (If you only have a larger dish, you will need to use more crushed potato chips for the topping.)

  10. Transfer the contents of the bowl into the dish and smooth it out to create a roughly flat surface.

  11. Sprinkle the potato chips evenly over the casserole ingredients.

  12. Place the baking dish in the oven and bake the casserole for 25 to 30 minutes until the chips are browned and the casserole bubbles.

  13. Wait 5 minutes before serving the casserole on its own or with steamed vegetables as an accompaniment. 


If you prefer a cheesy topping on your tuna casserole, sprinkle extra Parmesan cheese over the crushed potato chips before putting the casserole in the oven to bake.

Substitute Ingredients in Tuna Casserole

One of the reasons tuna casserole is so popular is because the ingredients are so versatile. If you don't have a can of cream of mushroom soup in your kitchen cupboard, you can make tuna casserole with chicken broth. Green beans are a tasty substitute for green pepper, leeks can take the place of onions and heavy cream can replace sour cream. If you don't have any potato chips, you can whizz some stale bread in a food processor and use the breadcrumbs as a topping.