Campbell's Tuna Rice Casserole Recipe: Cheesy Crisp Top Magic in One Pan

This Campbell's Tuna Rice Casserole recipe delivers the comforting, cheesy magic of a classic one-pan dish that’s been a dinner staple for decades. The secret lies in that crispy, golden top—achieved through precise layering and baking techniques that transform simple ingredients into something restaurant-worthy.

I’ve perfected this version to stay true to tradition while cutting prep time to just 30 minutes before it goes into the oven.

The beauty of this casserole is its simplicity: a creamy cheese sauce binds tender rice and flaky tuna, all baked until bubbly and perfectly browned.

No fancy skills required—just a few pantry staples, a single baking dish, and patience for the 20-minute bake that transforms everything into a hearty, satisfying meal. It’s the kind of dish that tastes even better the next day, making it ideal for meal prep or feeding a crowd.

Ingredients for campbell's tuna rice casserole

Pantry staples meet comfort food magic in this nostalgic one-pan classic.

The tuna quality makes all the difference—opt for high-quality brands like Starkist or Chicken of the Sea with no added water. Walmart or Kroger typically stock reliable options, and the difference in texture is noticeable. For the rice, long-grain white rice like Uncle Ben's or generic store brands work perfectly, but avoid instant rice. The Campbell's Cream of Mushroom Soup is a non-negotiable here—avoid the low-fat version, as the full-fat version delivers that signature creamy texture. Shred your own cheddar if possible; pre-shredded often contains anti-caking agents that prevent proper melting. The butter should be unsalted to control the seasoning balance precisely.

No Campbell's soup? Substitute with homemade mushroom cream sauce—sauté mushrooms, garlic, and shallots in butter, then add cream and a splash of chicken broth. Running low on cheddar? Monterey Jack or Colby blend works beautifully. The green onions can be swapped for chives or scallions if preferred, though they add a slightly sharper bite. For extra crispiness on top, add a sprinkle of crushed Ritz crackers to the breadcrumb mix. If you're preparing ahead, assemble the casserole up to a day in advance—just bake straight from the fridge, adding 5-10 minutes to the baking time.

This casserole reheats beautifully—cover with foil and bake at 350°F for 15 minutes to restore crispiness. It keeps well in the fridge for 4-5 days, though the texture becomes slightly softer. For freezer storage, bake fully, cool completely, then freeze in portions. Reheat from frozen by covering with foil and baking at 350°F for 30-40 minutes. The crispy top will need a final broil under the oven's 'broil' setting for 2-3 minutes to restore that golden perfection.

Step-by-step instructions for Campbell's tuna rice casserole

This one-pan method delivers a golden, crispy topping and creamy tuna filling every time.

In a large mixing bowl, combine the 2 cups Long-Grain White Rice, 1 can Campbell's Cream of Mushroom Soup, 1 cup Milk, 0.5 cup Butter, 2 cups Sharp Cheddar Cheese, 1 tsp Salt, 0.5 tsp Black Pepper, and 0.5 tsp Garlic Powder. Using a wooden spoon or rubber spatula, stir until the butter is fully melted and all ingredients are evenly incorporated. The mixture should be thick but still pourable.

This step ensures the rice absorbs all the flavorful liquids and cheese, creating a rich, cohesive base. The sharp cheddar adds depth, while the garlic powder and black pepper provide subtle seasoning that will carry through the cooking process. Avoid overmixing—just combine until smooth.

Drain the 2 cans Flaked Tuna in Water thoroughly, pressing between paper towels to remove excess moisture. Add the tuna and 0.25 cup Green Onions to the rice mixture and stir gently to distribute evenly. The green onions will add a fresh brightness that cuts through the richness of the cheese and tuna.

Here's the thing—don't skip draining the tuna well. Excess moisture in the casserole can lead to a soggy topping later. The green onions should be sliced thinly, with both white and green parts included for maximum flavor. Stir just until combined to avoid breaking up the tuna flakes too much.

Transfer the tuna-rice mixture to a greased 9x13-inch baking dish, spreading it evenly across the bottom. The dish should be filled about three-quarters full—this allows room for the crispy topping without spilling over during baking. Preheat your oven to 350°F while you prepare the topping.

For the topping, combine 0.5 cup Breadcrumbs and 0.25 cup Parmesan Cheese in a small bowl. Sprinkle this mixture evenly over the tuna-rice filling in the baking dish. The breadcrumbs will create the signature crispy texture, while the parmesan adds a savory depth that complements the cheddar below.

Place the assembled casserole in the preheated 350°F oven and bake for 45 minutes. After 45 minutes, the edges should begin to turn golden brown, but the center will still need time to cook through. This is when the magic happens—the topping transforms from dry breadcrumbs to a crispy, golden crust.

I know it's tempting to peek, but resist the urge. Every time you open the oven door, you risk letting heat escape and creating steam, which can soften the topping. Instead, trust the process and wait until the 45 minutes are up before checking. The casserole is done when the topping is deep golden brown and the internal temperature reaches 165°F.

Remove the casserole from the oven and let it rest for 10 minutes before serving. This resting period allows the filling to set slightly, making it easier to cut and serve. The crispy topping will firm up as it cools, creating that satisfying contrast with the creamy tuna-rice filling beneath.

Slice into 6 equal portions and serve immediately. Each bite should deliver a perfect balance of creamy tuna, rich cheddar, and that irresistible crispy topping. The green onions add a fresh finish that ties everything together. If you're serving this as a main dish, pair it with a simple side salad or steamed vegetables to round out the meal.

Essential equipment for perfect results

Baking Dish Essentials

The 9x13-inch baking dish is non-negotiable for this recipe—I use a Ceramic CorningWare dish for even heat distribution and easy release. If you don’t have one, a heavy-duty aluminum baking pan works too, but grease it well with butter or cooking spray to prevent sticking.

Avoid glass dishes with thin bases, as they can cause uneven browning and potential cracking under high heat. 🔥

Mixing Tools Matter

For the rice mixture, I recommend a wooden spoon or silicone spatula—they prevent scratching non-stick pans and help scrape every last bit of flavorful cheese from the bowl. A large mixing bowl (at least 3-quart capacity) ensures enough space to stir without overflow.

Avoid metal spoons if your bowl is non-stick, as they can damage the coating over time.

Crispy Topping Kit

The secret to that golden, crackling topping lies in your breadcrumbs and cheese. Use panko breadcrumbs for maximum crispiness—I buy the Kikkoman brand at my local grocery store. For the parmesan, freshly grated is key.

Pre-shredded cheese contains anti-caking agents that prevent proper melting. A microplane or box grater works best for achieving fine, even shreds. 🧀

Temperature Control

Your oven’s accuracy is critical here. I use an oven thermometer (like the Thermoworks Oven Thermometer) to confirm it’s hitting 350°F—many home ovens run hot or cold. If your oven runs hot, reduce the temperature to 325°F to prevent burning the topping.

For even baking, place the dish on the middle rack of your oven, where heat circulates most evenly.

Optional Upgrades

For a restaurant-quality finish, I sometimes add a wire cooling rack on top of the casserole during the last 5 minutes of baking. This creates extra crispiness from the hot air circulating underneath.

Another pro move: brush the baked topping with a little melted butter right after removing it from the oven for an extra-glossy finish. Just be quick—it sets fast! ⚡

Storage Containers

Leftovers deserve proper storage. Transfer any uneaten casserole to an airtight glass container (I love Pyrex with snap-on lids) to maintain freshness. For reheating, cover with aluminum foil and bake at 350°F for 15 minutes to restore crispiness.

If freezing, let it cool completely first—glass containers work best for freezer storage, as they’re less prone to absorbing odors than plastic.

Frequently asked questions