Homemade Tuna Noodle Casserole (Printable)

A creamy dish with tender noodles, tuna, peas, and a crunchy onion topping, ideal for cozy family dinners.

# Ingredient list:

→ 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

# Step-by-Step Guide:

01 - Preheat oven to 375°F. Lightly grease a 9 x 13 inch baking dish.
02 - Boil egg noodles according to package directions 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 1 more minute.
04 - Sprinkle flour over sautéed vegetables and stir constantly for 1 minute. Gradually whisk in milk 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 thyme.
06 - Add drained tuna, thawed peas, shredded cheddar, and cooked noodles into the sauce. Gently mix until fully combined.
07 - Transfer the mixture into the prepared baking dish and spread evenly.
08 - Sprinkle crispy fried onions evenly on top of the casserole.
09 - Bake uncovered for 25 to 30 minutes until bubbly and golden brown.
10 - Allow to rest for 5 minutes before serving.

# Expert Advice:

01 -
  • Easy to prepare for busy nights
  • Features a crispy onion topping for extra texture
02 -
  • This casserole contains dairy, wheat, fish, eggs, and possibly gluten
  • Double-check crispy onion and noodle ingredient lists if allergens are a concern
03 -
  • Add a splash of lemon juice or chopped parsley before serving for brightness
  • Substitute Swiss or Monterey Jack cheese for a flavor twist
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