Tuna Casserole Recipe With Mushroom Soup: Nostalgic Creamy Bake With Crispy Topping

This classic bake delivers creamy comfort with a crispy breadcrumb topping that’s impossible to resist. The combination of tuna, pasta, and mushroom soup creates a rich, velvety texture that feels like home.

I’ve perfected this dish to ensure every bite has the right balance—tender noodles, savory tuna, and a golden crust. It’s a nostalgic meal that’s as satisfying as it is simple.

Ingredients for Tuna Casserole Recipe with Mushroom Soup

Classic pantry staples combine to create this nostalgic, creamy bake with a golden, crispy finish.

The mushroom soup is the backbone here. Campbell’s or Progresso brands offer consistent quality and creamy texture. Opt for the condensed version—it provides the right thickness without watering down the dish. For the tuna, chunk light in water holds its shape better than oil-packed. Egg noodles are traditional, but any short pasta works (the ridges help catch the sauce).

No cream of mushroom soup? Cream of chicken soup (if dietary restrictions allow) or a homemade bechamel with sautéed mushrooms can substitute. Out of panko? Crushed saltine crackers or cornflakes make a fine crispy topping. For extra richness, swap the cheddar for Gruyère or Monterey Jack. Fresh tuna can be used if you prefer, but canned is more convenient and cost-effective.

Assemble and refrigerate the casserole up to 24 hours before baking. Leftovers keep well for 3-4 days in the fridge or freeze for up to 2 months. Reheat individual portions in the microwave for convenience.

Step-by-Step Instructions for Tuna Casserole With Mushroom Soup

Master the technique that delivers a creamy interior with a perfectly crispy topping every time.

Step 1: Prepare the Base and Cook the Noodles

Preheat your oven to 375°F. Bring a large pot of salted water to a boil and cook the 8 oz egg noodles according to package instructions until al dente. Drain and set aside, reserving ½ cup of pasta water for adjusting the sauce consistency later.

While the noodles cook, finely dice the yellow onion and 2 pieces celery stalks. Melt ¼ cup unsalted butter in a large skillet over medium heat and sauté the onion and celery for 5-6 minutes until softened and translucent. This builds the aromatic foundation for your casserole.

Step 2: Create the Creamy Sauce

Stir in the 2 tbsp all-purpose flour to create a roux, cooking for 1-2 minutes until it turns a light golden color. This thickens the sauce and prevents a raw flour taste. Slowly whisk in the 1 cup milk until smooth, then add the 2 cans cream of mushroom soup, 1 tbsp Dijon mustard, ½ tsp garlic powder, ½ tsp kosher salt, and ¼ tsp black pepper.

Simmer for 3-4 minutes until the sauce thickens enough to coat the back of a spoon. Remove from heat and fold in the drained 2 cans canned tuna and 1 cup frozen peas. The sauce should be velvety and rich, with the peas adding a pop of color and texture.

Step 3: Combine and Transfer to Baking Dish

Add the cooked egg noodles to the sauce mixture, stirring gently to combine. If the mixture seems too thick, add some of the reserved pasta water 1 tablespoon at a time until it reaches your desired consistency. The noodles should be fully coated but not swimming in sauce.

Transfer the mixture to a greased 9×13-inch baking dish, spreading it evenly. The dish should be filled to the brim—this ensures even cooking and a beautiful golden top.

Step 4: Add the Crispy Topping and Bake

In a small bowl, combine the 1 cup panko breadcrumbs and 1 cup sharp cheddar cheese. Sprinkle this mixture evenly over the casserole, pressing down lightly so it adheres. The panko ensures a crispy texture, while the cheese melts into a gooey, golden layer.

Bake uncovered for 20-25 minutes until the topping is deep golden brown and the edges are bubbling. For extra crispiness, broil for 1-2 minutes at the end, watching closely to prevent burning.

Step 5: Rest and Serve

Remove the casserole from the oven and let it rest for 5-10 minutes before serving. This allows the sauce to set slightly, making it easier to serve neat portions. The top should be crispy, while the interior remains creamy and comforting.

Scoop into bowls and serve immediately. Each bite should deliver a perfect balance of creamy sauce, tender noodles, and a satisfying crunch from the topping. This dish is best enjoyed fresh from the oven.

Health Benefits of tuna casserole recipe with mushroom soup

Protein Power 💪

This tuna casserole is packed with high-quality protein from tuna, helping to build and repair muscles. A single serving delivers a solid dose of this essential nutrient, keeping you full and energized throughout the day.

Protein also supports immune function and keeps your metabolism running smoothly. It’s a great way to fuel an active lifestyle!

Rich in Vitamins and Minerals 🥗

Tuna is a fantastic source of vitamin D and B vitamins, like B12, which are vital for energy production and brain health. The dish also provides iron and selenium, minerals that support red blood cell formation and antioxidant activity.

Mushroom soup adds extra nutrients like vitamin A and zinc, boosting your immune system and promoting healthy skin.

Heart-Healthy Fats 🫀

Tuna contains omega-3 fatty acids, which are known for their heart-protective benefits. These healthy fats help lower bad cholesterol levels and reduce inflammation, supporting cardiovascular health.

Including this dish in your diet can contribute to a balanced intake of fats that keep your heart strong and happy.