Homemade Tuna Noodle Casserole (Printable Version)

A cozy main dish combining tender noodles, savory tuna, and a crispy onion topping for comforting gatherings.

# Components:

→ Pasta

01 - 12 oz egg noodles

→ Seafood

02 - 2 cans (6 oz each) tuna in water, drained

→ Vegetables

03 - 1 cup frozen peas, thawed
04 - 1 small onion, finely chopped
05 - 2 cloves garlic, minced
06 - 1 cup sliced button mushrooms (optional)

→ Sauce

07 - 2 tablespoons unsalted butter
08 - 2 tablespoons all-purpose flour
09 - 2 cups whole milk
10 - ½ cup sour cream
11 - 1 teaspoon Dijon mustard
12 - ½ teaspoon salt
13 - ½ teaspoon black pepper
14 - ½ teaspoon dried thyme

→ Cheese

15 - 1 cup shredded cheddar cheese

→ Topping

16 - 1 cup crispy fried onions

# Preparation steps:

01 - Preheat the oven to 375°F and lightly grease a 9 x 13 inch baking dish.
02 - Cook egg noodles according to package instructions until al dente. Drain and set aside.
03 - In a large skillet over medium heat, melt butter. Add chopped onion and mushrooms; sauté for 4 to 5 minutes until softened. Add garlic and cook for an additional minute.
04 - Sprinkle flour over the vegetables and stir for 1 minute. Gradually whisk in milk, stirring constantly, and cook until the sauce thickens, about 3 to 4 minutes.
05 - Remove from heat and stir in sour cream, Dijon mustard, salt, pepper, and dried thyme.
06 - Add drained tuna, thawed peas, shredded cheddar cheese, and cooked noodles to the sauce. Gently fold together until evenly combined.
07 - Transfer the mixture into the prepared baking dish and spread evenly.
08 - Sprinkle crispy fried onions evenly over the mixture.
09 - Bake uncovered for 25 to 30 minutes until bubbly and golden on top.
10 - Allow the casserole to stand for 5 minutes before serving.

# Expert Advice:

01 -
  • Rich, creamy texture with crispy topping
  • Easy weeknight meal the whole family enjoys
02 -
  • Use full-fat dairy for a richer, creamier casserole
  • Check ingredient labels for allergy concerns, especially with noodles and crispy onions
03 -
  • Add chopped parsley or a splash of lemon juice before serving for brightness
  • Swap Swiss or Monterey Jack cheese for a twist on flavor
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