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Cheesy Tuna Mornay Recipe

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This Cheesy Tuna Mornay recipe is a creamy, comforting classic featuring tender pasta, flaked tuna, and a rich, cheesy sauce. Perfect for busy weeknights or family dinners, this easy-to-make dish brings nostalgic flavors to the table. A versatile meal that’s sure to satisfy every palate!

Ingredients

Scale
  • 2 cups cooked pasta (e.g., macaroni, penne, or shells)
  • 2 tbsp butter
  • 2 tbsp all-purpose flour
  • 2 cups milk (warm)
  • 1 cup shredded cheddar cheese
  • 1/3 cup grated parmesan cheese
  • 1 can (12 oz) tuna, drained and flaked
  • 1 cup frozen peas (optional)
  • 1 tsp Dijon mustard
  • Salt and pepper to taste
  • 1/2 cup breadcrumbs (optional, for topping)

Instructions

  • Preheat oven to 375°F (190°C) if baking the dish. Grease a casserole dish.
  • Cook pasta according to package instructions. Drain and set aside.
  • In a saucepan, melt butter over medium heat. Stir in flour and cook for 1-2 minutes to form a roux.
  • Gradually add warm milk while whisking constantly. Cook until the sauce thickens.
  • Add cheddar cheese, parmesan cheese, and Dijon mustard to the sauce. Stir until melted and smooth. Season with salt and pepper.
  • Gently fold in the cooked pasta, flaked tuna, and peas (if using). Mix until well coated.
  • Transfer the mixture to the prepared casserole dish. If desired, sprinkle breadcrumbs on top.
  • Bake for 15-20 minutes until the top is golden and bubbling, or serve immediately if skipping baking.

Notes

  • Swap tuna for cooked chicken or salmon for variety.
  • Add sautéed mushrooms or spinach for extra vegetables.
  • This recipe can be made ahead and reheated before serving.

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