Tuna Noodle Casserole Crispy

Featured in: Comfort Bakes

This creamy baked dish combines tender egg noodles with savory tuna and sweet peas, bound by a rich mushroom sauce infused with cheddar and herbs. Sautéed onions, garlic, and optional mushrooms add depth, while a golden crispy onion and breadcrumb topping delivers irresistible crunch. Perfectly baked until bubbling, it provides a comforting, hearty main course that serves six. Variations include using different proteins or lighter dairy options for a customized twist. Serve warm for a nourishing, family-friendly meal.

Updated on Thu, 20 Nov 2025 11:38:00 GMT
Golden-brown Tuna Noodle Casserole with a crispy onion topping, perfect for an easy weeknight family meal. Save
Golden-brown Tuna Noodle Casserole with a crispy onion topping, perfect for an easy weeknight family meal. | ovenharmony.com

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

This casserole truly brings back memories of weeknight dinners growing up, where everyone would gather eagerly at the table as the irresistible smell filled the house.

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 (storebought), 1/2 cup breadcrumbs, 2 tbsp melted butter

Instructions

Preheat 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 Ingredients:
Add the cooked noodles, drained tuna, peas, sautéed vegetables, and parsley to the bowl. Stir gently to combine.
Assemble Casserole:
Pour the mixture into the prepared baking dish and spread evenly.
Prepare 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 & Serve:
Bake uncovered for 25-30 minutes, or until the casserole is bubbling and the topping is golden brown. Let stand for 5 minutes before serving.
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| ovenharmony.com

This became an instant hit at our recent family gathering—everyone went for seconds and there were no leftovers by the end of the night.

Required Tools

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

Nutritional Information

Each serving provides 430 calories, 18 g total fat, 43 g carbohydrates, and 25 g protein

Notes

For extra flavor, add hot sauce or a squeeze of lemon juice to the sauce. Use low-fat sour cream and cheese for a lighter version. Serve with a simple green salad for a complete meal.

A bubbling, creamy Tuna Noodle Casserole, topped with crunchy fried onions, ready to serve and enjoy. Save
A bubbling, creamy Tuna Noodle Casserole, topped with crunchy fried onions, ready to serve and enjoy. | ovenharmony.com

Enjoy this casserole as a comforting classic worth sharing—its crunchy onion topping and creamy flavor never fail to impress.

Recipe FAQ

How do I achieve a crispy onion topping?

Use store-bought crispy fried onions combined with buttered breadcrumbs sprinkled evenly on top before baking. This mixture browns beautifully in the oven for a crunchy finish.

Can I substitute the tuna with other proteins?

Yes, canned salmon or shredded cooked chicken work well as alternatives, offering similar texture and flavor balance in the dish.

What type of noodles works best for this dish?

Wide egg noodles are ideal as they hold the creamy sauce well and maintain a tender yet firm texture after baking.

Is it possible to lighten the creamy sauce?

Using low-fat sour cream and reduced-fat cheese lowers the richness while preserving creaminess, making for a lighter version of the dish.

How long should the casserole rest before serving?

Allow the baked casserole to stand for about 5 minutes after removing from the oven to let it set for easier serving and enhanced flavors.

Tuna Noodle Casserole Crispy

Tender noodles and savory tuna baked with a creamy sauce and topped with golden crispy onions.

Prep duration
20 min
Cook duration
35 min
Complete duration
55 min
Created by Claire Johnson

Classification Comfort Bakes

Complexity Easy

Heritage American

Output 6 Portions

Dietary considerations None specified

Components

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

Directions

Phase 01

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

Phase 02

Cook noodles: Boil egg noodles in salted water until al dente. Drain and set aside.

Phase 03

Sauté aromatics and mushrooms: In a skillet over medium heat, sauté finely chopped onion and minced garlic in oil until softened, about 3 minutes. Add mushrooms if using and cook until tender.

Phase 04

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

Phase 05

Combine ingredients: Add cooked noodles, drained tuna, frozen peas, sautéed vegetables, and chopped parsley to the sauce mixture. Gently stir to incorporate evenly.

Phase 06

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

Phase 07

Add crispy topping: Mix breadcrumbs with melted butter. Sprinkle evenly over casserole, then top with crispy fried onions.

Phase 08

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

Phase 09

Rest before serving: Allow to stand 5 minutes before serving to set.

Necessary tools

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

Allergy details

Review each component for potential allergens and consult healthcare professionals if you're unsure about ingredients.
  • Contains wheat (noodles, breadcrumbs), milk (cheese, milk, sour cream, soup), fish (tuna), and possibly soy (in soup and fried onions).

Nutritional information (each portion)

These values are approximate guidelines only and shouldn't replace professional medical guidance.
  • Energy: 430
  • Fats: 18 g
  • Carbohydrates: 43 g
  • Proteins: 25 g