Tuna Noodle with Onion

Featured in: Main Dishes

This creamy tuna noodle bake combines tender egg noodles with savory tuna and vibrant peas. A rich sauce of cream, sour cream, and cheddar cheese binds the flavors, enhanced by sautéed onions, garlic, and optional mushrooms. The dish is finished with a golden, crispy fried onion and breadcrumb topping, baked until bubbling and browned. Ideal for easy, satisfying meals that bring warmth and flavor to the table.

Updated on Thu, 20 Nov 2025 09:14:00 GMT
A bubbly tuna noodle casserole, topped with golden crispy onions, ready for a comforting meal. Save
A bubbly tuna noodle casserole, topped with golden crispy onions, ready for a comforting meal. | cheerfulchefs.com

A comforting, creamy baked casserole featuring tender noodles, savory tuna, and a golden, crispy onion topping—perfect for family dinners or potlucks.

I remember the first time I made this casserole for my family. The kitchen filled with the aroma of buttery onions and creamy sauce, and everyone went back for seconds—even the picky eaters!

Ingredients

  • Pasta: 340 g (12 oz) wide egg noodles
  • Protein: 2 cans (each 170 g/6 oz) tuna in water, drained
  • Vegetables: 1 cup frozen peas, 1 small onion finely chopped, 2 cloves garlic minced, 1 cup sliced mushrooms (optional), 2 tbsp chopped fresh parsley
  • Sauce: 1 can (295 g/10.5 oz) condensed cream of mushroom soup, 1 cup whole milk, 1/2 cup sour cream, 1 cup shredded cheddar cheese, 1/2 tsp black pepper, 1/2 tsp salt, 1/2 tsp dried thyme (optional)
  • Topping: 1 1/2 cups crispy fried onions (store-bought), 1/2 cup breadcrumbs, 2 tbsp melted butter

Instructions

Prepare the Oven:
Preheat the oven to 190°C (375°F). Lightly grease a 23x33 cm (9x13 inch) baking dish.
Cook Noodles:
Cook the egg noodles in a large pot of salted boiling water until al dente. Drain and set aside.
Sauté Vegetables:
In a large skillet over medium heat, sauté the chopped onion and garlic in a bit of oil until soft (about 3 minutes). Add mushrooms if using and cook until tender.
Prepare Sauce:
In a large bowl, whisk together the condensed soup, milk, sour cream, shredded cheese, salt, pepper, and thyme.
Combine:
Add the cooked noodles, drained tuna, peas, sautéed vegetables, and parsley to the bowl. Stir gently to combine.
Assemble:
Pour the mixture into the prepared baking dish and spread evenly.
Make Topping:
In a small bowl, toss breadcrumbs with melted butter. Sprinkle the buttered breadcrumbs evenly over the casserole, then top with crispy fried onions.
Bake:
Bake uncovered for 25-30 minutes, or until the casserole is bubbling and the topping is golden brown.
Rest:
Let stand for 5 minutes before serving.
This warm photo reveals a creamy tuna noodle casserole with a crispy, buttery onion topping served. Save
This warm photo reveals a creamy tuna noodle casserole with a crispy, buttery onion topping served. | cheerfulchefs.com

This casserole always reminds me of cozy Sunday dinners growing up. My kids now help sprinkle the crispy onions on top—it's everyone's favorite job!

Required Tools

Large pot, skillet, mixing bowls, whisk, 23x33 cm (9x13 inch) baking dish, measuring cups and spoons

Allergen Information

Contains wheat, milk, fish, and may contain soy. Check all ingredient labels if sensitive.

Nutritional Information

Calories: 430, Total Fat: 18 g, Carbohydrates: 43 g, Protein: 25 g (per serving)

Golden-brown, baked tuna noodle casserole glistens, showcasing tender noodles and a satisfying texture. Save
Golden-brown, baked tuna noodle casserole glistens, showcasing tender noodles and a satisfying texture. | cheerfulchefs.com

Serve hot and enjoy the creamy comfort. Leftovers taste great reheated for lunch the next day!

Recipe FAQs

What type of noodles are best for this dish?

Wide egg noodles work best as they hold the creamy sauce well and offer a tender bite.

Can I substitute the tuna with other proteins?

Yes, canned salmon or cooked shredded chicken are great alternatives that complement the flavors.

How can I make the topping extra crispy?

Use store-bought crispy fried onions mixed with buttery breadcrumbs for a golden and crunchy topping.

Are there any suggested additions to enhance flavor?

A dash of hot sauce or a squeeze of lemon juice added to the sauce brightens the overall taste.

What sides pair well with this casserole?

Serve it alongside a fresh green salad to balance richness with crisp, refreshing greens.

Is it possible to make a lighter version?

Using low-fat sour cream and cheese reduces richness without compromising the comforting texture.

Tuna Noodle with Onion

Comforting creamy noodles with tender tuna and crispy onion topping in a baked casserole.

Prep Time
20 minutes
Cook Time
35 minutes
Overall Time
55 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

Protein

01 2 cans (6 oz each) tuna in water, drained

Vegetables

01 1 cup frozen peas
02 1 small onion, finely chopped
03 2 cloves garlic, minced
04 1 cup sliced mushrooms (optional)
05 2 tbsp chopped fresh parsley

Sauce

01 1 can (10.5 oz) condensed cream of mushroom soup
02 1 cup whole milk
03 1/2 cup sour cream
04 1 cup shredded cheddar cheese
05 1/2 tsp black pepper
06 1/2 tsp salt
07 1/2 tsp dried thyme (optional)

Topping

01 1 1/2 cups crispy fried onions (store-bought)
02 1/2 cup breadcrumbs
03 2 tbsp melted butter

Step-by-Step Guide

Step 01

Preheat oven and prepare baking dish: Preheat the oven to 375°F. Lightly grease a 9x13 inch baking dish.

Step 02

Cook noodles: Cook the egg noodles in a large pot of salted boiling water until al dente. Drain and set aside.

Step 03

Sauté vegetables: In a large skillet over medium heat, sauté the chopped onion and garlic in a bit of oil until soft, about 3 minutes. Add mushrooms if using and cook until tender.

Step 04

Prepare sauce mixture: In a large bowl, whisk together the condensed cream of mushroom soup, whole milk, sour cream, shredded cheddar cheese, salt, black pepper, and dried thyme if using.

Step 05

Combine main ingredients: Add the cooked noodles, drained tuna, frozen peas, sautéed vegetables, and chopped parsley to the sauce mixture. Stir gently to combine evenly.

Step 06

Assemble casserole: Transfer the mixture to the prepared baking dish, spreading it evenly.

Step 07

Add topping: In a small bowl, toss breadcrumbs with melted butter. Evenly sprinkle the buttered breadcrumbs over the casserole, then top with crispy fried onions.

Step 08

Bake: Bake uncovered for 25 to 30 minutes until the casserole is bubbling and the topping is golden brown.

Step 09

Rest before serving: Allow the dish to stand for 5 minutes before serving.

Tools You’ll Need

  • Large pot
  • Skillet
  • Mixing bowls
  • Whisk
  • 9x13 inch baking dish
  • Measuring cups and spoons

Potential Allergens

Inspect ingredients for specific allergens and contact a professional for concerns.
  • Contains wheat (noodles, breadcrumbs), milk (cheese, milk, sour cream, soup), fish (tuna), and possibly soy (soup and fried onions). Check labels for allergens and cross-contamination.

Nutritional Details (Per Serving)

Provided as supportive info; always cross-check with your healthcare provider.
  • Calories: 430
  • Fats: 18 grams
  • Carbohydrates: 43 grams
  • Proteins: 25 grams