Baked tuna pasta casserole stirs flaked tuna, tender noodles, peas, and cheddar into a creamy mushroom sauce, then bakes under a crunchy golden topping for a budget friendly family dinner.
Everything comes from the pantry and freezer, and the dish can be assembled ahead and baked later. Short pasta shapes catch the sauce, and the crushed topping adds a salty crunch to every scoop.
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Why This Baked Tuna Pasta Casserole Recipe Works
Canned tuna is cooked and ready to use, so the casserole only needs to heat through, and it stays moist because the sauce coats every noodle. That makes it a reliable choice when the pantry is nearly bare.
Cream of mushroom soup and a little milk make a simple sauce, and cheddar melts through the pasta so each bite tastes rich and savory.
Frozen peas go in straight from the bag for sweetness and color, and the crumb topping gives a golden lid that contrasts with the soft filling.
Ingredients for Baked Tuna Pasta Casserole
- For the filling: drained canned tuna, cooked short pasta, condensed cream of mushroom soup, milk, frozen peas, shredded cheddar, pepper, and paprika.
- For the topping: extra cheddar plus crushed potato chips or breadcrumbs, scattered over the surface so it browns evenly in the oven.
Canned tuna. Tuna in water tastes cleaner, while oil packed tuna adds a richer flavor, so choose based on your taste.
Short pasta. Elbows, shells, or bowties hold the sauce well, and the pasta should be slightly underdone before baking.
Mushroom soup. This condensed soup is the sauce base, and a splash of milk loosens it so it spreads easily.
Peas. Frozen peas add sweetness, and they cook in the oven without thawing first.
Topping. Crushed potato chips give a salty crunch, and breadcrumbs make a lighter, plainer topping.
How to Make Baked Tuna Pasta Casserole
1. Heat the oven. Heat the oven to 375 degrees F and grease a baking dish.
2. Cook the pasta. Boil the pasta for a minute less than the package says, then drain it well.
3. Mix the filling. Stir the tuna, pasta, soup, milk, peas, and cheddar together in a large bowl, seasoning with pepper and paprika.
4. Add the topping. Pour the mixture into the dish and cover it with extra cheddar and crushed chips or breadcrumbs.
5. Bake and rest. Bake for twenty five minutes, until bubbly and golden and the center reaches 165 F, then rest for a few minutes before serving.
How to Serve Baked Tuna Pasta Casserole
Spoon the casserole onto plates while it is still hot. It goes well with an Italian house salad, air fryer asparagus, fluffy dinner rolls, and crunchy garlic pickles.
How to Store and Reheat Baked Tuna Pasta Casserole
Cool the casserole within two hours and refrigerate it in a covered dish for three to four days. Freeze portions for up to two months and thaw them in the refrigerator before reheating. Reheat until the center reaches 165 F, adding a splash of milk if the sauce has thickened.
Tips and Variations for Baked Tuna Pasta Casserole
Drain the tuna. Press out the liquid so the casserole does not turn watery, but do not squeeze it completely dry.
Undercook the pasta. Slightly firm noodles finish cooking in the oven, so they stay tender instead of mushy. Pull one noodle out a minute early and taste it, since pasta brands vary in how fast they soften.
Season gently. The soup, tuna, and cheese are already salty, so taste before adding any extra salt.
Swap the vegetables. Spinach or corn replace the peas well, using the same amount.
Flag the allergens. This dish contains fish, milk, wheat, and soy, so label it clearly for guests with allergies.
Go gluten free. Gluten free pasta, soup, and breadcrumbs make a version for guests who avoid wheat.
Cool safely. Do not leave the casserole out for more than two hours, and divide leftovers into shallow containers.
Check trusted guidance. Read the University of Wisconsin Extension leftovers guidance for safe storage times.
Frequently Asked Questions About Baked Tuna Pasta Casserole
How do you make baked tuna pasta casserole?
Mix tuna, cooked pasta, soup, milk, peas, and cheese, top with crumbs, and bake at 375 F until bubbly.
Can I make baked tuna pasta casserole ahead of time?
Yes. Assemble it a day early, cover it, and refrigerate it, then bake it with a few extra minutes.
Can I freeze baked tuna pasta casserole?
Yes. Freeze portions for up to two months, thaw them overnight in the refrigerator, and reheat until hot.
Is tuna in water or oil better?
Water packed tuna gives a lighter flavor, and oil packed tuna gives a richer one, so either works.
What topping works well?
Crushed potato chips, breadcrumbs, or buttery cracker crumbs all give a crunchy golden finish.
Baked Tuna Pasta Casserole
Equipment
- 9 by 13 inch baking dish
- Large pot
- Large mixing bowl
Ingredients
Main Ingredients
- 2 can canned tuna 5 ounce cans, drained
- 8 oz short pasta elbows, shells, or bowties, cooked and drained
- 1 can condensed cream of mushroom soup 10.5 ounce can
- ½ cup milk
- 1 cup frozen peas
- 1 cup shredded cheddar cheese for the filling
- ½ cup shredded cheddar cheese for the topping
- ¼ tsp black pepper
- ½ tsp paprika
- 1 cup crushed potato chips or breadcrumbs, for the topping
Instructions
Cooking
- Heat. Heat the oven to 375 degrees F and grease a baking dish.
- Boil. Cook the pasta a minute short of tender and drain.
- Mix. Stir the tuna, pasta, soup, milk, peas, and filling cheddar together with pepper and paprika.
- Top. Pour into the dish and cover with the extra cheddar and crushed chips.
- Bake. Bake 25 minutes until bubbly, golden, and 165 F in the center, then rest a few minutes.
