Creamy Tuna Pasta Casserole is rich, satisfying, and made from pantry staples you probably already have. A silky homemade béchamel blends with white cheddar and Parmesan, then combines with tender pasta, sweet peas, corn and canned tuna to create a comforting tuna-and-noodles bake. It’s simple to put together, freezes well, and makes a great family meal any night of the week.
This recipe is intentionally pantry-friendly: pasta, canned tuna, frozen vegetables and common dairy ingredients come together into a classic casserole. If you enjoy tuna, you can also try variations such as tuna patties, tuna pasta salads, or a tuna ceviche-style starter—simple twists that use similar ingredients and flavors.
Why You’ll Love This Cheesy Tuna Bake
- Comforting without being heavy. The béchamel and cheese create a creamy texture, while peas and corn keep the dish bright and balanced.
- Quick and easy. Minimal prep and straightforward steps mean dinner is on the table fast.
- Tasty and versatile. The flavors are familiar and satisfying, and you can swap vegetables or pasta shapes to suit what you have.
Tuna Pasta Bake Ingredients
- Pasta: Rigatoni works well, but any sturdy tube or short pasta—penne, fusilli or farfalle—will hold up in the bake.
- Béchamel sauce: A classic white sauce made from butter, flour, garlic and whole milk, seasoned with a touch of ground mustard, salt and pepper.
- Cheese: White cheddar for creaminess and Parmesan for a savory finish (reserve a little cheddar to sprinkle on top).
- Tuna: Canned albacore or chunk light tuna, drained—use tuna in water or oil depending on preference.
- Vegetables: Frozen peas and corn add color, sweetness and texture; no need to thaw them first.
- Garnish: Fresh chopped parsley brightens the finished dish.
How To Make a Tuna Pasta Bake
- Prepare the oven and dish. Preheat the oven to 350°F (175°C). Grease a rectangular baking dish and set aside.
- Cook the pasta. Boil the pasta according to package directions, removing it about 1 minute early so it remains al dente. Drain and set aside.
- Make the béchamel. In a large pot, melt butter over medium heat. Stir in flour and minced garlic and cook briefly. Gradually whisk in whole milk and continue whisking until the sauce is smooth and thickened. Season with ground mustard, salt and pepper.
- Add the cheeses. Stir in grated white cheddar (reserve 1/4 cup) and Parmesan until fully melted and the sauce is smooth.
- Combine everything. Add the drained pasta, tuna, peas and corn to the cheese sauce. Stir until everything is evenly coated with the creamy sauce.
- Bake: Transfer the mixture to the prepared baking dish. Sprinkle the reserved cheddar over the top and bake 15–20 minutes, until the cheese is melted and the casserole is heated through.
- Garnish and serve. Remove from the oven, sprinkle with chopped parsley, and serve warm.
Tips for Success
- Cook pasta to al dente because it will continue to soften while baking.
- Choose a sturdy pasta shape so the pieces don’t break down while mixing and baking.
- Use room-temperature milk for a smoother béchamel and thin the sauce with a little extra milk if it becomes too thick.
- Frozen peas and corn can be used straight from the freezer—no thawing needed.
- Customize with other vegetables you like; chop larger pieces into bite-sized chunks.
- This casserole freezes well. Wrap unbaked portions tightly and freeze for up to two months. Thaw overnight before baking.
Frequently Asked Questions
Should I use tuna in water or tuna in oil?
The choice is personal: tuna packed in oil has a richer mouthfeel, while tuna packed in water is milder and lower in calories. Either works in this casserole.
Why is my tuna and noodle casserole dry?
Pasta absorbs liquid, so a too-thick béchamel or overcooked pasta can leave the dish dry. Thin the sauce with a splash of milk, or cover the dish for part of the bake to retain moisture.
Do I need to precook the pasta?
Yes. Cook the pasta ahead of time to al dente, then mix it with the sauce before baking. This ensures even texture after baking.
How do I store and reheat leftovers?
Store leftovers in an airtight container in the refrigerator for up to three days. Reheat individual portions in the microwave or rewarm the casserole in a 350°F oven until heated through.
Ingredients (Serves 4)
- 8 oz rigatoni pasta
- 3 tablespoons unsalted butter
- 3 tablespoons all-purpose flour
- 1 teaspoon minced garlic
- 2 cups whole milk
- 1 teaspoon ground mustard
- 1 teaspoon salt
- ½ teaspoon ground pepper
- ¾ cup grated white cheddar, divided
- ½ cup grated Parmesan
- 10 oz canned albacore tuna, drained
- ½ cup frozen peas
- ½ cup frozen corn
- Chopped parsley for garnish
Instructions
- Preheat the oven to 350°F. Grease a rectangular baking dish.
- Cook pasta to one minute shy of package directions. Drain and set aside.
- In a large pot, melt butter, add flour and garlic and cook briefly. Whisk in milk until smooth and thickened.
- Season the sauce with ground mustard, salt and pepper. Stir in the cheeses, reserving ¼ cup cheddar for the top.
- Add pasta, tuna, peas and corn to the sauce and stir to combine.
- Transfer to the baking dish, sprinkle the reserved cheddar on top and bake 15–20 minutes until cheese melts and casserole is heated through.
- Garnish with parsley and serve warm.
Nutrition (per serving, approximate)
- Calories: 648 kcal
- Carbohydrates: 62 g
- Protein: 39 g
- Fat: 27 g
- Sodium: 1259 mg
More Casserole Ideas
- Easy sushi-style bake
- Million dollar chicken bake
- Baked eggplant pasta
- Keto cauliflower mac and cheese
- Baked salsa chicken
- Chicken Alfredo lasagna roll-ups
I hope you enjoy this Creamy Tuna Pasta Casserole. It’s a dependable, freezer-friendly meal that’s perfect for busy weeknights. If you make it, please rate the recipe and leave a comment describing any tweaks you tried—I love seeing how readers adapt it. Tag your photos so others can discover variations and ideas from home cooks everywhere.