This lighter twist on classic tuna casserole is made with fresh vegetables, a creamy herb-seasoned sauce, and sharp cheddar for richness. Topped with toasted panko breadcrumbs and brightened with a hint of lemon, it’s a wholesome dish full of comforting flavors.

🧀 Ingredients

¼ cup toasted Panko breadcrumbs
2 tablespoons butter
8 oz baby bella mushrooms, sliced
2 medium carrots, diced
1 medium white onion, diced
3 cloves garlic, minced
¼ cup all-purpose flour
1½ cups chicken or vegetable stock
1½ cups plain milk
2 teaspoons Italian seasoning
1 teaspoon fine sea salt
½ teaspoon freshly ground black pepper
1 cup frozen peas
8 oz wide egg noodles
3 (5 oz) cans tuna, drained
1 cup (4 oz) grated sharp white cheddar cheese
Optional garnishes: chopped parsley or thyme, lemon wedges

🔪 Instructions

1. Boil the Pasta Water

Bring a large pot of salted water to a boil to cook the egg noodles.

2. Toast the Breadcrumbs

In a large sauté pan over medium-high heat, add the Panko breadcrumbs. Stir or shake occasionally for 2–3 minutes, until evenly golden and crisp. Transfer to a bowl and set aside. Wipe the pan clean for the next step.

3. Sauté the Vegetables

Add butter to the pan and melt over medium heat. Add mushrooms, carrots, and onions. Cook for 6–8 minutes, stirring occasionally, until the vegetables are softened and slightly caramelized. Add garlic and sauté for 1 more minute.

4. Make the Sauce

Stir in the flour and cook for 1 minute, stirring constantly. Gradually pour in the stock and mix until smooth. Add milk, Italian seasoning, salt, pepper, and peas. Cook until just shy of a simmer, then reduce heat to low.

5. Cook the Noodles

While the sauce simmers, cook the noodles until just al dente. Drain using a spider strainer or colander, and transfer them directly to the pan with the sauce. (Alternatively, mix everything in the stockpot if the pan is too small.)

6. Assemble the Casserole

Add the drained tuna and cheddar cheese to the noodle and sauce mixture. Gently stir until the cheese melts and everything is evenly combined.

7. Serve

Portion into bowls and top with toasted breadcrumbs, a sprinkle of fresh herbs, and a wedge of lemon for brightness.

💛 Why You’ll Love This Recipe

A lighter version of a classic comfort dish
Full of vegetables for added nutrients and flavor
Uses real ingredients—no canned soups
Ready in under an hour
Freezer-friendly and great for meal prep

💡 Tips

Toast breadcrumbs last-minute to keep them crispy
Use low-fat milk or dairy alternatives to keep it light
Break up tuna chunks gently to maintain texture
Grate your own cheese for the smoothest melt
Don’t overcook the noodles—they’ll soften more in the sauce

🔄 Variations and Substitutions

Pasta: Swap egg noodles for whole wheat pasta or gluten-free varieties
Protein: Try canned salmon or shredded rotisserie chicken
Cheese: Use Monterey Jack or Gruyère for a different flavor
Add-ins: Stir in chopped spinach, kale, or roasted red peppers
Breadcrumb topping: Use crushed crackers or gluten-free breadcrumbs instead

❓ FAQs

Can I make this ahead of time?
Yes! Assemble the casserole and refrigerate for up to 24 hours. Reheat gently on the stove or in the oven before serving.

Can I bake this casserole instead?
You can! Transfer to a baking dish, top with breadcrumbs, and bake at 375°F (190°C) for 15–20 minutes until bubbly and golden.

Can I freeze it?
Absolutely. Cool completely, portion into containers, and freeze for up to 2 months. Thaw overnight and reheat as needed.

🍽️ Serving and Suggestions

Serve with a fresh side salad or steamed green beans
Add crusty bread or garlic toast for a heartier meal
Garnish with fresh herbs and a squeeze of lemon for brightness
Great for lunch leftovers or easy weeknight dinners
Pairs well with sparkling water, iced tea, or a light white wine