If you’re searching for a comforting, wholesome, and effortlessly delicious meal, this Creamy Tuna and Broccoli Casserole Recipe is exactly what you need. It beautifully combines tender broccoli, flaky tuna, and creamy ranch dressing with the rich, melty goodness of cheddar cheese to create a dish that feels like a warm hug in every bite. Perfect for busy weeknights or cozy family dinners, this casserole showcases how simple ingredients can come together to deliver incredible flavors and a satisfying texture that everyone will rave about.

Ingredients You’ll Need

The dish is shown in a clear glass square baking dish filled with a mix of broccoli florets, small light tan pieces of chicken, bright green peas, and thin strands of orange-yellow cheddar cheese, all coated lightly in a creamy white sauce. The broccoli pieces have a rough texture with small bud clusters, while the chicken chunks are soft and uneven in shape, scattered evenly throughout. The peas add round, smooth spots of color among the more textured ingredients, and the cheese strands are thin and slightly curly, weaving through the other elements, giving a colorful and fresh look to the mix. The dish sits on a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Gathering your ingredients for this casserole is a breeze, and each one plays an important role in creating that perfect balance of creaminess, freshness, and cheesy indulgence. From the mild taste of albacore tuna to the vibrant green broccoli florets, every element will contribute color, flavor, and texture to your dish.

5-ounce can solid albacore tuna: Use good-quality tuna and drain it well to prevent excess moisture in the casserole.
6 cups small broccoli florets: Fresh or thawed broccoli provides a satisfying crunch and vivid color to brighten the dish.
1.75 cups shredded cheddar cheese: Sharp or mild cheddar adds richness and melts beautifully for that irresistible topping.
1 cup frozen green peas: These little pops of sweetness complement the savory tuna and broccoli perfectly.
1 cup ranch dressing: Either store-bought or homemade, ranch dressing creates the creamy base with zesty herb undertones.
1/4 cup finely grated parmesan cheese: Sprinkled on top for a golden, slightly nutty crust that enhances the casserole’s depth.

How to Make Creamy Tuna and Broccoli Casserole Recipe

Step 1: Prepare the Broccoli and Tuna

Start by preheating your oven to 375 degrees Fahrenheit. While it warms up, prepare the broccoli by trimming any large florets into bite-sized pieces—aim for no bigger than two inches. Place the broccoli in a microwave-safe bowl, cover it, and cook until tender, about five minutes. After microwaving, drain the broccoli well and pat it dry with paper towels to avoid sogginess. Next, open your can of tuna, drain it thoroughly, and gently flake it with a fork until there are no big chunks left.

Step 2: Assemble the Casserole

Bring your 8×8-inch baking dish to the counter and add the cooked broccoli, flaky tuna, and frozen green peas. Pour in the ranch dressing and mix everything carefully but thoroughly to ensure every bite has a harmonious blend of flavors. Stir in half of the shredded cheddar cheese, then sprinkle the remaining cheddar evenly across the top. Finish by sprinkling the finely grated parmesan, which will create a deliciously golden crust once baked.

Step 3: Bake and Cool

Pop the assembled casserole into the preheated oven and bake for about 25 minutes until the cheese is bubbling, lightly browned, and the whole dish is warmed through. When you take it out, allow the casserole to rest for around five minutes. This resting time helps the bubbling subside and makes it easier to cut and serve without everything spilling out.

How to Serve Creamy Tuna and Broccoli Casserole Recipe

A clear glass baking dish filled with a layered broccoli casserole. The base layer consists of bright green broccoli pieces, partially visible under a thick layer of shredded yellow cheddar cheese. On top, a generous, even layer of white breadcrumbs covers the cheese, adding a grainy texture. The casserole is set on a white marbled surface with a dark grey cloth underneath the dish photo taken with an iphone --ar 4:5 --v 7

Garnishes

For an extra touch of freshness, chopped fresh parsley or a sprinkle of freshly cracked black pepper is lovely right before serving. A light drizzle of lemon juice can also brighten the creamy flavors without overpowering the dish.

Side Dishes

This casserole pairs beautifully with simple green salads, crusty bread, or even a tangy coleslaw to add crunch and contrast. Roasted root vegetables or a fresh tomato salad would also complement its rich, cheesy goodness.

Creative Ways to Present

Try serving this casserole in individual ramekins for an elegant presentation, ideal for dinner parties or special occasions. Alternatively, layer it with cooked pasta for a unique twist or spoon it over toast for a cozy open-faced meal.

Make Ahead and Storage

Storing Leftovers

Once cooled, transfer any leftovers to an airtight container and pop them in the refrigerator. They’ll stay fresh for up to three days and maintain their creamy texture and delightful flavor.

Freezing

This Creamy Tuna and Broccoli Casserole Recipe freezes well! Wrap the casserole tightly or portion it into freezer-safe containers and freeze for up to two months. Thaw overnight in the fridge before reheating for the best results.

Reheating

Reheat your leftovers gently in the oven at 350 degrees Fahrenheit until warmed through, about 15 to 20 minutes. Cover with foil to prevent the cheese from burning. Alternatively, use a microwave on medium power, stirring halfway through to ensure even heating.

FAQs

Can I use fresh peas instead of frozen?

Absolutely! Fresh peas add a delightful pop to the casserole. Just blanch them briefly in boiling water before mixing in to ensure they’re tender and vibrant.

What can I substitute for ranch dressing?

If you want to switch things up, try using a creamy mayo-based dressing or a mixture of sour cream and herbs. Just keep in mind this will slightly change the flavor but keep the creaminess intact.

Is this casserole good for meal prep?

Yes! This recipe holds up wonderfully for meal prep. Prepare it ahead, refrigerate, and heat portions throughout the week for a quick, satisfying meal.

Can I add pasta to this recipe?

Definitely! Adding cooked pasta like elbow macaroni or penne transforms this into a hearty tuna bake. Just mix the pasta in during the assembly stage for a comforting twist.

How do I make this casserole dairy-free?

To make a dairy-free version, use dairy-free cheese alternatives and swap ranch dressing for a plant-based creamy dressing. The flavor profile will differ slightly but still be delicious.

Final Thoughts

There is something truly delightful about this Creamy Tuna and Broccoli Casserole Recipe that combines simplicity with heartwarming flavors. Whether you’re feeding your family or looking for a nourishing dish to enjoy on chilly nights, this casserole checks all the boxes. I encourage you to give it a try—once you do, it might just become your go-to comfort food that brings everyone back to the table with smiles.