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Creamy chicken and corn casserole in a glass baking dish with a golden crispy top.

Tuna Mornay

Smiling woman with glasses and dark hair, professional portrait for Baked Bree website.Diane Goodman
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Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Course Main Course
Cuisine American
Servings 10 servings
Calories 553 kcal

Ingredients
  

  • 16 ounces elbow macaroni
  • 2 teaspoons olive oil
  • 1 medium yellow onion diced
  • 1/4 cup unsalted butter
  • 1/4 cup all-purpose flour
  • 4 cups whole milk room temperature
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
  • 1 cup grated Parmesan cheese
  • 1 cup shredded mild cheddar cheese
  • 20 ounces canned tuna drained and flaked
  • 1 can sweet corn (15 ounces) drained
  • 1 can creamed corn (15 ounces)

Instructions
 

  • Bring a large pot of salted water to a boil. Add the elbow macaroni and cook until al dente. Drain and set aside.
  • Heat the olive oil in a skillet over medium heat. Add the diced onion and cook until soft, about 5 to 7 minutes. Set aside.
  • In a medium saucepan, melt the butter over medium heat. Stir in the flour and whisk for 1 to 2 minutes to form a roux. Slowly add the milk while whisking constantly to prevent lumps. Bring the mixture to a simmer and cook until it thickens, about 4 to 5 minutes.
    Cream being poured into a mixing bowl for baking.
  • Season with salt and pepper, then remove from heat and stir in both the Parmesan and cheddar cheeses until melted and smooth.
    Creamy batter mixture in a beige mixing bowl with a wooden spoon on a light surface.
  • In a large bowl, gently fold together the cooked pasta, flaked tuna, sweet corn, creamed corn, and sautéed onion. Pour the cheese sauce over the mixture and stir until evenly combined.
  • Transfer the mixture to a greased 9x13-inch baking dish. If desired, top with a little extra cheese. Bake in a preheated oven at 350°F for 20 to 25 minutes, until bubbly and the top is lightly golden. Cover with foil during the last 5 minutes of baking if the surface is brown but the center is not heated through yet.
    Creamy macaroni and cheese casserole in a glass baking dish.

Nutrition

Calories: 553kcalCarbohydrates: 47gProtein: 27gFat: 29gSaturated Fat: 11gSodium: 1973mgFiber: 5g
Keyword Tuna Mornay
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