Easy Tuna Noodle Casserole Recipe (Kids LOVE This!)

Tuna noodle casserole gets a bad reputation — and most of it is deserved, honestly. The versions from the 1970s that involved a can of cream of mushroom soup dumped over egg noodles and baked until dry?

Yeah, no. But this version is different.

It starts with boxed mac and cheese as the base, which sounds like a shortcut (it is), but it’s also the reason kids eat it without complaint and why adults go back for seconds. It comes together in under an hour, reheats like a dream, and uses pantry staples you probably already have.

I’ve been making this for years — it’s one of those dinners that appears on the menu when I need something hands-off. Mix it, top it, slide it in the oven, and walk away.

By the time it’s done the kitchen still looks manageable and everyone’s fed. That’s the whole pitch.

What Makes This Dinner Work

• Mac and cheese base: Using prepared boxed mac and cheese instead of plain egg noodles means built-in creaminess and flavor — no separate sauce to make.
• Cream of celery soup: Adds body and a subtle savory note that plays well with tuna. Cream of mushroom works too, but celery keeps it lighter.
• Potato chip topping: Gives you a crunchy, salty crust without any effort. Breadcrumbs are fine, but chips are better — and using the crumbs from the bottom of a nearly-empty bag is genuinely the move.
• Gentle tuna folding: Adding the tuna last and barely stirring keeps it in chunks instead of turning it into paste. Texture matters here.
• One dish: Everything goes into one casserole dish. That’s it. No separate sauce pan, no straining, no fuss.

What to Know Before You Start

This is a genuinely easy recipe, but a few things will make the difference between good and great:

Make the mac and cheese first, completely. Don’t try to shortcut this step.

Cook the noodles fully, drain them, and make the cheese sauce as directed. The casserole bakes at 350°F for 30 minutes — that’s enough to heat everything through but not enough to cook raw pasta.

Underdone noodles going in = underdone noodles coming out.

Use a big enough dish. A 2.5 to 3-quart casserole dish gives you room to stir everything together without making a mess.

If your dish is too small, you’ll be fighting it the whole time.

Don’t overmix after adding the tuna. Stir the mac, soup, and milk together well before the tuna goes in.

Once you add tuna, fold it in gently two or three times — just enough to distribute it. Overworking it makes the tuna flake into tiny bits and the texture gets muddy.

Add the chips right before it goes in the oven. If you top it and let it sit, the chips will steam and go soggy.

Top it, bake it immediately.

Timing note: The casserole comes out bubbling around the edges at 30 minutes, with the chip topping golden and set. If you’re baking from cold (straight from the fridge), add 5–10 minutes.

Ingredients

What You’ll Need

• 1 box Macaroni & Cheese (prepared as directed on the box)
• 1 can Cream of Celery Soup (10.5 oz, undiluted)
• 1 cup milk
• 2 pouches or 2 cans tuna (drained well)
• 1 cup crushed potato chips
• Optional: frozen peas, diced celery, or other vegetables

A Few Notes on Ingredients

Boxed mac and cheese: Any brand works. The 7.25 oz standard size is what the recipe is built around.

If you use a white cheddar version, the flavor profile shifts a little — still good, just different. Velveeta Shells and Cheese also works and makes it extra creamy.

Cream of celery vs. cream of mushroom: I prefer cream of celery here — it’s a little lighter and doesn’t overpower the tuna.

Cream of mushroom is the more traditional casserole choice and is a perfectly solid substitution. Cream of chicken also works if that’s what’s in your pantry.

Tuna pouches vs. cans: Either works.

Pouches tend to have better texture because they’re not sitting in water — less draining required and the tuna stays in larger pieces. If you’re using cans, drain them really well and press out the liquid.

Waterlogged tuna makes the casserole soupy.

Potato chips: Classic plain chips are the standard. Ruffles work well because the ridges hold up a little better under heat.

Kettle chips stay crunchier longer. Whatever you use, crush them into rough pieces — not powder, not huge shards.

Save the crumbs from the bottom of the bag and you’re already there.

Vegetables: Totally optional but nice. A handful of frozen peas folded in with the tuna adds color and a little sweetness.

Diced celery adds crunch. Neither requires pre-cooking — they’ll heat through during baking.

How to Make Tuna Noodle Casserole

Step 1: Prepare the mac and cheese

Cook the macaroni and cheese according to package directions. Make the full cheese sauce — don’t skip that part.

Set aside in your 2.5 to 3-quart baking dish.

Step 2: Preheat the oven

Set the oven to 350°F. You want it fully preheated before the casserole goes in — don’t rush this.

Step 3: Add soup and milk

Add the can of cream of celery soup (don’t add water — use it undiluted) and 1 cup of milk directly to the mac and cheese in the baking dish. Stir well until everything is combined and smooth.

The mixture will look a little loose at this stage — that’s fine. It thickens as it bakes.

Step 4: Fold in the tuna

Add the drained tuna on top of the mac mixture. Fold it in gently with a spoon or spatula — two or three passes is enough.

You want tuna pieces distributed throughout but still intact. If you’re adding vegetables (peas, celery), add them at this step too.

Step 5: Top with chips

Crush a cup of potato chips and scatter them evenly over the top of the casserole. Don’t press them down — you want them sitting on top so they toast and get crunchy, not steam and go soft.

Step 6: Bake

Bake at 350°F for 30 minutes. The edges will be bubbling and the chip topping will be golden.

Let it sit for a few minutes before serving — it sets up a little as it cools and is easier to scoop.

Helpful Tips

Common mistakes to avoid

• Using undrained tuna: This is the biggest one. Excess liquid from the tuna makes the casserole watery and the texture gets unpleasant. Drain it well, then press it with a paper towel if you’re using canned.
• Overstirring the tuna: It breaks down into tiny flakes and you lose all texture. Fold gently.
• Topping with chips too early: If you assemble this ahead of time and refrigerate it, add the chips right before baking — not before. Soggy chip topping is the worst possible outcome of this recipe.
• Skipping the rest time: It comes out of the oven very hot and a little loose. Five minutes on the counter lets it firm up and makes it much easier to serve without it sliding around the bowl.

Easy upgrades

• Add a cup of frozen peas — no thawing needed, they cook right in.
• Stir in a handful of shredded cheddar on top of the chips for an extra layer of richness.
• A tablespoon of Dijon mustard stirred in with the soup adds a subtle sharpness that works really well with tuna.
• Crushed Ritz crackers instead of potato chips give a buttery crunch that’s a little more refined.
• A squeeze of lemon juice before serving brightens the whole dish.

Storage, Make-Ahead, and Leftovers

Storing leftovers

Store leftovers in an airtight container in the refrigerator for up to 3 days. The chip topping will soften overnight — that’s just how it goes.

If crispy topping matters to you, add fresh chips when reheating.

Reheating

Reheat individual portions in the microwave in 60-second intervals, stirring between. For a larger portion, reheat covered at 325°F for 15–20 minutes.

It reheats well — the mac and cheese base stays creamy. This makes genuinely good next-day lunch.

Make-ahead

You can assemble the casserole (without the chip topping) up to 24 hours in advance. Cover tightly with plastic wrap or foil and refrigerate.

When ready to bake, add the chip topping and bake at 350°F — add 10 minutes to the bake time since it’s starting cold.

Freezing

This casserole freezes okay — not great. The mac and cheese base can get grainy when thawed and the texture changes.

If you’re meal prepping specifically to freeze, it’s not the best candidate. Better to make a fresh batch — it only takes 15 minutes of hands-on time.

Frequently Asked Questions

Can I use egg noodles instead of mac and cheese?

Yes — but it changes the dish significantly. If you use plain egg noodles, you’ll need to increase the soup and add additional cheese (shredded cheddar works well) to get a saucy, flavorful result.

Cook the noodles fully before combining. The mac and cheese base is what makes this particular recipe fast and kid-friendly, so if you swap it out you’re essentially making a different casserole.

Can I substitute cream of mushroom for cream of celery?

Absolutely. Cream of mushroom is the classic tuna casserole soup and it works great here.

The flavor is earthier and a little more savory. Cream of chicken is another good option if that’s what you have.

All three work — just use one can, undiluted.

Do I have to use canned/pouched tuna, or can I use fresh?

You can use fresh cooked tuna (flaked) or even leftover cooked fish, but canned or pouched tuna is genuinely the better choice here. It’s already cooked, it’s shelf-stable, and the flavor integrates well with the casserole.

Fresh tuna tends to be drier and less forgiving in a baked dish. Save the good fresh tuna for something else.

What can I use instead of potato chips for the topping?

Crushed Ritz crackers are the most popular alternative — they give a buttery, slightly rich crunch. Panko breadcrumbs work well too, especially if you toss them with a little melted butter first.

Plain breadcrumbs can work but tend to go powdery. French fried onions are another option if you want extra flavor.

Whatever you use, the goal is a crunchy, savory topping that contrasts with the creamy filling.

My casserole came out soupy — what went wrong?

Almost certainly the tuna wasn’t drained well enough. Canned tuna holds a lot of liquid, and if it goes in without being properly drained, it releases that liquid into the casserole during baking.

Drain it in a colander, then press firmly with a paper towel. Another possible cause: too much milk.

Stick to 1 cup — it thins the soup just enough without making the mixture too loose.

Can I double this recipe?

Yes, easily. Double everything — use two boxes of mac and cheese, two cans of soup, two cups of milk, four pouches of tuna — and bake in a 9×13 baking dish.

Bake time stays approximately the same at 30–35 minutes. Good option if you’re feeding a larger group or want planned leftovers.

Serving Ideas

This casserole is a complete meal on its own — protein, starch, and a creamy sauce all in one dish. But if you want to round it out:

• A simple green salad with a light vinaigrette cuts through the richness nicely.
• Steamed broccoli or green beans on the side adds color and balances the meal.
• Serve in wide shallow bowls — it scoops better than from a plate and keeps everything contained.
• Dinner rolls or crusty bread if you want something to soak up the extra sauce.

Variations and Substitutions

Make it with added vegetables

Frozen peas are the classic addition — stir them in with the tuna. Frozen corn works the same way.

Diced canned green chiles add a mild kick. Sliced black olives are polarizing but have their fans.

If you want to add fresh vegetables (like diced bell pepper or celery), they’ll soften during baking but won’t fully cook — fine if you like a little texture, less ideal if you want everything uniformly soft.

Dairy-free version

Use a dairy-free boxed mac and cheese (Annie’s has one), oat milk or unsweetened almond milk in place of regular milk, and a dairy-free cream soup. The result is slightly different in texture but the overall dish holds up well.

Use a different protein

Canned chicken works as a straight swap for tuna — same quantity, same process. Canned salmon is another option and has a slightly richer flavor.

Both work well with the cream of celery base.

Tools That Help

Nothing fancy required, but a few things make this easier:

• A 2.5 to 3-quart casserole dish is the right size for this recipe. Too small and you can’t stir; too large and it spreads thin.
• A flexible silicone spatula makes folding in the tuna without breaking it up much easier than a spoon.
• A multi-pack of tuna pouches is worth keeping in the pantry — they’re easier to drain than cans and tend to have better texture.

Related Recipes

If you made this and want something similar on another night:

• Easy Chicken Casserole — same one-dish format, different protein
• Homemade Mac and Cheese — when you want the full scratch version
• Easy Weeknight Dinner Ideas — more dinners that don’t require much hands-on time
• Creamy Chicken Noodle Soup — another pantry-friendly, kid-approved dinner