Creamy Tuna Noodle Casserole

Featured in: Main Dishes

This comforting dish features tender egg noodles in a luscious creamy sauce enriched with tuna flakes, peas, and cheddar cheese. The mixture is topped with crunchy golden onions and baked until bubbling, creating a satisfying balance of creamy and crispy textures. Ideal for a family meal, it offers a hearty pescatarian option with savory herbs enhancing every bite. Quick to prepare, it pairs well with fresh greens and complements white wines.

Updated on Sat, 22 Nov 2025 16:54:00 GMT
Creamy tuna noodle casserole with golden, crispy onions; a rich, comforting, baked dish. Save
Creamy tuna noodle casserole with golden, crispy onions; a rich, comforting, baked dish. | cheerfulchefs.com

A comforting classic casserole featuring tender egg noodles, savory tuna, and a rich creamy sauce, all topped with golden crispy onions for irresistible crunch.

This casserole is a beloved family favorite that brings warmth and satisfaction to any dinner.

Ingredients

  • Pasta: 12 oz (340 g) wide egg noodles
  • Sauce: 2 tablespoons unsalted butter, 1 small yellow onion finely chopped, 2 cloves garlic minced, 3 tablespoons all-purpose flour, 2 cups (480 ml) whole milk, 1 cup (240 ml) low-sodium chicken or vegetable broth, 1/2 cup (120 ml) sour cream, 1/2 teaspoon salt, 1/2 teaspoon ground black pepper, 1/2 teaspoon dried thyme, 1/2 teaspoon dried parsley
  • Filling: 2 cans (5 oz/140 g each) solid white tuna in water drained and flaked, 1 cup (120 g) frozen peas thawed, 1 cup (100 g) sliced white mushrooms (optional), 1 cup (115 g) shredded cheddar cheese
  • Topping: 1 1/2 cups (75 g) store-bought crispy fried onions

Instructions

Preheat oven:
Preheat the oven to 375°F (190°C) Lightly grease a 9x13-inch (23x33 cm) baking dish
Cook noodles:
Bring a large pot of salted water to a boil Cook egg noodles according to package directions until al dente Drain and set aside
Cook aromatics:
While noodles cook melt butter in a large skillet over medium heat Add chopped onion and cook for 3 minutes until softened Add garlic and cook for 1 minute
Make roux:
Sprinkle flour over onions and stir constantly for 1 minute to cook the flour
Add liquids:
Gradually whisk in milk and broth Cook whisking until the sauce thickens about 3 4 minutes
Add seasonings:
Remove from heat Stir in sour cream salt pepper thyme and parsley
Add filling:
Add drained tuna peas mushrooms if using and shredded cheddar cheese to the sauce Stir until evenly combined
Combine noodles:
Add cooked noodles and gently fold until everything is well mixed
Assemble:
Transfer mixture to the prepared baking dish Spread evenly
Add topping:
Top with crispy fried onions
Bake:
Bake uncovered for 25 30 minutes or until the casserole is bubbling and the onions are golden brown
Rest:
Let rest for 5 minutes before serving
A close-up of a bubbling creamy tuna noodle casserole just out of the oven, ready to serve. Save
A close-up of a bubbling creamy tuna noodle casserole just out of the oven, ready to serve. | cheerfulchefs.com

Enjoying this casserole always brings my family together around the dinner table sharing stories and laughter.

Notes

For a lighter version use Greek yogurt instead of sour cream and reduced-fat cheese Pair with a crisp green salad and a glass of Chardonnay

Required Tools

Large pot Large skillet Whisk 9x13-inch baking dish Mixing spoon

Nutritional Information

Calories 410 Total Fat 16 g Carbohydrates 43 g Protein 25 g per serving

Tender egg noodles and flaky tuna baked in a creamy sauce, a classic tuna noodle casserole delight. Save
Tender egg noodles and flaky tuna baked in a creamy sauce, a classic tuna noodle casserole delight. | cheerfulchefs.com

This creamy tuna noodle casserole makes a perfect hearty meal any day of the week.

Recipe FAQs

What type of noodles are best?

Wide egg noodles work best as they hold the creamy sauce and bake evenly, providing tender texture.

Can other seafood be used instead of tuna?

Yes, canned salmon or cooked chicken can be substituted to vary the protein while maintaining rich flavors.

How can I make the sauce thicker?

Slowly whisking the flour into butter and cooking before adding milk helps develop a smooth, thick base for the sauce.

What adds crunch to this dish?

Store-bought crispy fried onions on top create a golden crunchy layer that contrasts nicely with the creamy filling.

Are there lighter ingredient alternatives?

Greek yogurt can replace sour cream and reduced-fat cheese can reduce richness without sacrificing taste.

Which herbs enhance the flavor best?

Dried thyme and parsley add subtle earthiness and freshness, balancing the creamy and savory components.

Creamy Tuna Noodle Casserole

Tender egg noodles combined with flaky tuna, creamy sauce, and golden crispy onions delivering rich textures.

Prep Time
20 minutes
Cook Time
30 minutes
Overall Time
50 minutes
Creator Ruby Smiles

Recipe Type Main Dishes

Skill Level Easy

Cuisine Background American

Portions 6 Serves

Dietary Preferences None specified

What You’ll Need

Pasta

01 12 oz wide egg noodles

Sauce

01 2 tablespoons unsalted butter
02 1 small yellow onion, finely chopped
03 2 cloves garlic, minced
04 3 tablespoons all-purpose flour
05 2 cups whole milk
06 1 cup low-sodium chicken or vegetable broth
07 1/2 cup sour cream
08 1/2 teaspoon salt
09 1/2 teaspoon ground black pepper
10 1/2 teaspoon dried thyme
11 1/2 teaspoon dried parsley

Filling

01 2 cans (5 oz each) solid white tuna in water, drained and flaked
02 1 cup frozen peas, thawed
03 1 cup sliced white mushrooms (optional)
04 1 cup shredded cheddar cheese

Topping

01 1 1/2 cups store-bought crispy fried onions

Step-by-Step Guide

Step 01

Prepare Oven and Dish: Preheat oven to 375°F. Lightly grease a 9x13-inch baking dish.

Step 02

Cook Noodles: Bring a large pot of salted water to a boil. Cook egg noodles until al dente. Drain and set aside.

Step 03

Sauté Aromatics: Melt butter in a large skillet over medium heat. Cook chopped onion for 3 minutes until softened, then add garlic and cook 1 minute more.

Step 04

Make Roux: Sprinkle flour over onions and stir constantly for 1 minute to cook the flour.

Step 05

Prepare Sauce: Gradually whisk in milk and broth. Cook, whisking constantly, until sauce thickens, about 3 to 4 minutes.

Step 06

Finish Sauce: Remove from heat. Stir in sour cream, salt, pepper, thyme, and parsley.

Step 07

Combine Filling: Add drained tuna, peas, mushrooms if using, and shredded cheddar cheese to the sauce. Stir to combine evenly.

Step 08

Mix with Noodles: Gently fold cooked noodles into the sauce mixture until thoroughly combined.

Step 09

Assemble Dish: Transfer mixture evenly into the prepared baking dish.

Step 10

Add Topping: Spread the crispy fried onions evenly over the top.

Step 11

Bake: Bake uncovered for 25 to 30 minutes, until bubbling and onions are golden brown.

Step 12

Rest and Serve: Allow to rest for 5 minutes before serving.

Tools You’ll Need

  • Large pot
  • Large skillet
  • Whisk
  • 9x13-inch baking dish
  • Mixing spoon

Potential Allergens

Inspect ingredients for specific allergens and contact a professional for concerns.
  • Contains wheat, dairy, fish, and eggs.
  • Crispy onions may contain gluten or soy; verify packaging for allergens.

Nutritional Details (Per Serving)

Provided as supportive info; always cross-check with your healthcare provider.
  • Calories: 410
  • Fats: 16 grams
  • Carbohydrates: 43 grams
  • Proteins: 25 grams