Tuna Baked Pasta Dish (Printable)

Baked pasta with flaky tuna, peas, creamy sauce, and crunchy golden breadcrumbs.

# What You’ll Need:

→ Pasta

01 - 9 oz egg noodles or fusilli

→ Vegetables

02 - 1 cup frozen peas
03 - 1 small onion, finely chopped
04 - 2 cloves garlic, minced

→ Tuna

05 - 2 cans (6 oz each) tuna in water, drained

→ Sauce

06 - 2 tablespoons unsalted butter
07 - 2 tablespoons all-purpose flour
08 - 1 1/2 cups milk
09 - 1/2 cup sour cream
10 - 1/2 teaspoon salt
11 - 1/4 teaspoon ground black pepper
12 - 1/2 teaspoon dried thyme (optional)
13 - 1/2 cup shredded cheddar cheese

→ Topping

14 - 1 cup panko breadcrumbs
15 - 2 tablespoons unsalted butter, melted
16 - 2 tablespoons grated Parmesan cheese

# How To Make It:

01 - Preheat oven to 375°F. Lightly grease a 2-quart baking dish.
02 - Boil egg noodles in salted water until al dente. Drain and set aside.
03 - Melt 2 tablespoons butter in a large skillet over medium heat. Add chopped onion and minced garlic; sauté for 3 minutes until softened and fragrant.
04 - Sprinkle flour over onion and garlic. Stir constantly and cook for 1 minute to form a roux.
05 - Gradually whisk in milk, bringing mixture to a simmer. Cook, stirring, until thickened, approximately 3 to 4 minutes.
06 - Remove from heat. Stir in sour cream, salt, black pepper, dried thyme if using, and shredded cheddar until smooth.
07 - Fold tuna, peas, and cooked pasta gently into the sauce until evenly coated.
08 - Transfer mixture into prepared baking dish, spreading evenly.
09 - Mix panko breadcrumbs with melted butter and grated Parmesan cheese. Evenly sprinkle over the casserole surface.
10 - Bake uncovered for 20 to 25 minutes until bubbly and golden brown on top.
11 - Allow to cool for 5 minutes before serving.

# Expert Advice:

01 -
  • It comes together in under an hour, making it perfect for those nights when you need dinner without the fuss.
  • The sauce is genuinely silky and doesn't taste like it came from a can, which surprised me the first time I made it from scratch.
  • Everyone at the table disappears into their own world for a moment when they taste that crispy-soft contrast.
02 -
  • The sauce will thicken more as it cools, so if it looks slightly too thin when you pour it into the dish, that's actually perfect—it won't end up gluey.
  • Don't skip draining the tuna thoroughly; watery tuna is the reason casseroles get a bad reputation.
  • The breadcrumb topping only stays crispy for a few hours, so eat this the day you make it or reheat it at a low temperature with fresh topping before serving.
03 -
  • Make the entire casserole up to the baking step the night before, cover it, refrigerate it, and bake it the next day—just add a few extra minutes to the baking time since it'll be cold.
  • If your sauce breaks or gets lumpy, strain it through a fine sieve and whisk in a tablespoon of cold milk to smooth it out.
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