Tuna Casserole Recipe hits all the cozy notes with creamy sauce, tender noodles, and a crunchy golden topping that tastes like childhood in a casserole dish. It works perfectly for busy families, college kids with tiny kitchens, or anyone who wants comfort food on the table in about 45 minutes. I grew up on every version of tuna casserole you can imagine, and I still crave this one on rainy nights.
Why Make This Tasty Tuna Casserole Recipe at Home
Homemade tuna casserole tastes richer, creamier, and more comforting than anything from a box. You control the salt, the veggies, and the quality of tuna, so the flavor stays clean and not overly fishy.
You also stretch a couple of cans of tuna into a full family dinner, which keeps the grocery bill happy. Leftovers reheat beautifully, so one pan feeds you for more than one meal with almost no extra work.
My whole family scraped the pan clean, and my picky kid asked for seconds of this Tasty Tuna Casserole Recipe ★★★★★
Ingredients You Need
Main ingredients
- 12 ounces egg noodles
- Wide egg noodles give the best texture and soak up the sauce without turning mushy.
- 2 cans (5 ounces each) solid white albacore tuna in water, drained
- Use chunk light tuna if you want a milder flavor and lower cost.
- 1 cup frozen peas
- 1 cup sliced mushrooms (fresh or canned, drained)
- Skip mushrooms if your crew hates them and add extra peas or corn.
- 1 small onion, finely diced
- 2 cloves garlic, minced
Creamy sauce
- 3 tablespoons unsalted butter
- 3 tablespoons all-purpose flour
- 2 cups milk (whole milk gives the creamiest result, but 2% works)
- 1 cup chicken broth or vegetable broth
- 1 teaspoon kosher salt, plus more to taste
- 1/2 teaspoon black pepper
- 1 teaspoon onion powder
- 1/2 teaspoon garlic powder
- 1 teaspoon Dijon mustard
- This does not make it taste like mustard; it just brightens the sauce.
- 1 1/2 cups shredded sharp cheddar cheese, divided
- Pre-shredded cheese works, but block cheese that you shred yourself melts smoother.
Crunchy topping
- 1 cup crushed buttery crackers or plain potato chips
- Use panko breadcrumbs if you prefer a lighter crunch.
- 2 tablespoons melted butter
- 2 tablespoons grated Parmesan cheese
Pantry shortcuts and substitutions
- Use 2 cans of condensed cream of mushroom soup and skip the butter, flour, and broth if you want a shortcut version. Thin the soup with 1 cup milk and season to taste.
- Swap peas for frozen mixed vegetables if you want more color and texture.
- Use gluten free noodles and gluten free flour or cornstarch to thicken the sauce if you cook for gluten free eaters.
Equipment list
- 9×13 inch baking dish
- Large pot for boiling noodles
- Large skillet or saucepan for the sauce
- Whisk
- Mixing spoon or spatula
- Measuring cups and spoons
Tips & Mistakes
- Boil the noodles just to al dente so they stay firm after baking.
- Salt the pasta water well so the noodles carry flavor into every bite.
- Drain the tuna thoroughly so the casserole does not turn watery.
- Sauté the onions and mushrooms until they turn golden to build deeper flavor.
- Whisk the flour into the melted butter fully so the sauce stays smooth and not lumpy.
- Add the milk slowly while you whisk so the sauce thickens evenly.
- Pull the pan from the oven when the edges bubble and the top turns golden, not dark brown.
- Let the casserole rest 10 minutes before serving so it sets and slices cleanly.
- Taste the sauce before you mix everything together so you adjust salt and pepper early.
- Keep the topping in a thin, even layer so it crisps instead of turning soggy.
How to Make Tuna Casserole
1: Cook the noodles
Bring a large pot of salted water to a boil. Add the egg noodles and cook them 1 to 2 minutes less than the package suggests. Drain the noodles and set them aside while you make the sauce.
2: Sauté the veggies
Heat a large skillet over medium heat and add 1 tablespoon of the butter. Add the diced onion and cook until it turns soft and lightly golden, about 4 to 5 minutes. Stir in the mushrooms and cook until they release their moisture and brown slightly, then add the garlic and cook 30 seconds more.
3: Make the creamy sauce
Add the remaining butter to the skillet and let it melt. Sprinkle the flour over the veggies and stir constantly for 1 to 2 minutes so the flour cooks and loses its raw taste. Pour in the milk slowly while you whisk, then add the broth and keep whisking until the sauce thickens and coats the back of a spoon.
Stir in the salt, pepper, onion powder, garlic powder, and Dijon mustard. Add 1 cup of the shredded cheddar and stir until it melts into a smooth, creamy sauce. Taste and adjust the seasoning so the sauce tastes slightly saltier than you want the final casserole, since the noodles and tuna will mellow it.
4: Combine everything
Add the drained tuna to the sauce and break it into chunks with your spoon. Stir in the frozen peas and the cooked noodles until everything mixes evenly and every noodle gets coated in sauce. If the mixture looks too thick, splash in a bit more milk until it looks creamy and loose but not soupy.
5: Assemble the casserole
Preheat your oven to 375°F. Lightly grease a 9×13 inch baking dish and spread the tuna noodle mixture inside in an even layer. Sprinkle the remaining 1/2 cup cheddar over the top.
6: Mix the crunchy topping
In a small bowl, combine the crushed crackers or chips, melted butter, and Parmesan cheese. Stir until the crumbs soak up the butter. Sprinkle this mixture evenly over the casserole so every bite gets some crunch.
7: Bake
Place the baking dish on the center rack of the oven. Bake for 20 to 25 minutes, until the edges bubble and the top turns golden and crisp. Let the Tasty Tuna Casserole Recipe rest for about 10 minutes before you scoop and serve so it holds together.
Variations I’ve Tried
I swap cheddar for pepper jack when I want a little kick and extra flavor. My kids love a version with corn and peas together, plus a topping of crushed cheese crackers. I also make a lighter version with Greek yogurt in place of part of the milk and cheese, which still tastes creamy but cuts some richness.
Sometimes I stir in a handful of frozen spinach for extra greens, or I use broccoli florets that I steam lightly first. When I crave a more old school flavor, I use cream of mushroom soup and potato chips on top, just like my grandma did. You can also use canned salmon instead of tuna for a fun twist that still fits the same method.
How to Serve Tuna Casserole
Serve this Tasty Tuna Casserole Recipe hot with a simple green salad or steamed green beans to balance the richness. Add sliced cucumbers or carrot sticks for crunch and color on the plate. Kids often enjoy it with applesauce or fresh fruit on the side, which keeps the meal light and friendly.
If you pack leftovers for lunch, tuck a small side of cherry tomatoes or a crisp coleslaw in the container. The casserole tastes great on its own, so you do not need anything fancy to turn it into a full meal.
How to store
- Let the casserole cool to room temperature for about 30 minutes, then cover tightly and store in the fridge for up to 4 days.
- For freezing, portion the cooled casserole into airtight containers or wrap the whole pan well and freeze for up to 2 months.
- Reheat single portions in the microwave with a splash of milk, covered, until hot, then uncover for the last 20 seconds so the top stays a bit crisp.
- Reheat a full pan in the oven at 350°F, covered with foil for 15 to 20 minutes, then uncover for 5 to 10 minutes so the topping crisps again.
Tuna Casserole Recipe
Ingredients
Instructions
- Preheat the oven to 350°F (175°C). Grease a 9x13-inch baking dish.
- Cook the egg noodles in a large pot of salted boiling water according to package directions until al dente. Drain well.
- In a large bowl, combine the condensed cream of mushroom soup and milk until smooth.
- Stir in the drained tuna, frozen peas, garlic powder, onion powder, salt (if using), black pepper, and shredded cheddar cheese.
- Add the cooked noodles to the mixture and gently toss until everything is evenly coated.
- Transfer the mixture to the prepared baking dish and spread it into an even layer.
- In a small bowl, mix the crushed butter crackers or breadcrumbs with the melted butter, then sprinkle evenly over the top of the casserole.
- Bake for 25–30 minutes, or until the casserole is bubbly and the topping is golden brown.
- Let the casserole rest for 5 minutes before serving.
Notes
Approximate per serving (1/6 of recipe): 420 calories; fat 20 g; saturated fat 9 g; carbohydrates 38 g; fiber 3 g; sugars 5 g; protein 22 g; sodium 820 mg. Values will vary based on specific ingredient brands, substitutions, and portion size.