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a wooden spoon scooping creamy tuna mornay out of a red dutch oven
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Dutch Oven Tuna Mornay

Dutch oven tuna mornay is a delicious, perfectly seasoned tuna casserole made all in one pot. Using a versatile piece of cookware makes clean up a breeze so you'll want this easy casserole as part of your regular rotation!
Prep Time5 minutes
Cook Time25 minutes
Total Time30 minutes
Course: Dinner, Entree, Main Course, Pasta
Cuisine: American, Australian
Servings: 6
Calories: 437kcal

Ingredients

  • 8-12 oz spiral pasta
  • 16 oz bag frozen peas & carrots
  • 1/2 cup frozen corn kernels
  • 1 quart 2 % milk
  • 2 tbsp cornstarch
  • 1 1/2 tsp dried onion
  • 1/4 tsp garlic powder
  • 1/8 tsp smoked paprika
  • 1/4 tsp black pepper
  • seasoned salt to taste
  • 1 7 oz can albacore tuna packed in water, drained and flaked
  • 3/4 cup shredded cheddar cheese
  • 1 sleeve Ritz crackers lightly crushed
  • 2 1/2 tbsp butter melted

Instructions

  • Fill a large Dutch oven halfway with water. Salt the water, and bring to a boil. When boiling stir in the pasta. Once the water comes back to a boil, add the frozen vegetables. Continue cooking until the pasta's cooked to al dente. Strain & set aside.
    8-12 oz spiral pasta, 16 oz bag frozen peas & carrots, 1/2 cup frozen corn kernels
  • Add all of the milk EXCEPT for 1/3 cup to the Dutch oven. Bring the milk to a bubble, whisking often so it doesn't scorch. Add the remaining milk to a small bowl with the cornstarch, whisk together, and then whisk the mixture into the milk in the pot. Simmer just until slightly thickened.
    1 quart 2 % milk, 2 tbsp cornstarch
  • Add the seasonings and cheese to the pot, stirring until the cheese has melted and the sauce is smooth. Let the sauce simmer until it's noticeably thicker. Remove the pot from heat.
    1 1/2 tsp dried onion, 1/4 tsp garlic powder, 1/8 tsp smoked paprika, 1/4 tsp black pepper, seasoned salt, 3/4 cup shredded cheddar cheese
  • Add the tuna and cooked pasta mixture to the pot, tossing gently until evenly combined. Set aside.
    1 7 oz can albacore tuna
  • In a small mixing bowl add both the crushed crackers and melted butter, stirring together until evenly combined. Spread this mixture evenly out over the pasta.
    1 sleeve Ritz crackers, 2 1/2 tbsp butter
  • Bake the pasta at 350° for 12-15 minutes, then let it rest for 5 minutes.
  • Serve warm and enjoy!

Notes

  • Don't skip letting the casserole rest after you pull it out of the oven. It needs time to set up a bit before you scoop into it.
  • Feel free to adjust the veggies according to your tastes. Frozen cut green beans or even sliced mushrooms would also be decent in this.
  • If you prefer to have a classic white mornay, use white cheddar instead of orange. It won't change the flavor just the look.

Nutrition

Calories: 437kcal | Carbohydrates: 58g | Protein: 17g | Fat: 16g | Saturated Fat: 8g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 4g | Trans Fat: 0.4g | Cholesterol: 39mg | Sodium: 356mg | Potassium: 540mg | Fiber: 5g | Sugar: 10g | Vitamin A: 7650IU | Vitamin C: 11mg | Calcium: 339mg | Iron: 2mg