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cheesy tuna casserole served in a bowl with a silver spoon

Cheesy Tuna Casserole

This tuna pasta melt is sure to be a family favorite.
Course Main
Cuisine American, Mediterranean
Keyword Cheesy tuna casserole, pantry meal
Prep Time 5 minutes
Cook Time 45 minutes
Total Time 55 minutes
Servings 6
Calories 229kcal


  • 300 g (10.5oz) pasta
  • 1 tbsp olive oil
  • 1 cup frozen diced onion 1 onion peeled and diced
  • 1 cup frozen diced bell pepper or I fresh one deseeded and diced
  • 1 tsp minced garlic
  • 1 tsp Greek seasoning or dried oregano
  • 2 28oz diced tomatoes (2 X 400g)
  • 2 X 120g (8.4oz) of tuna drained ( 2 x 120G)
  • 6 oz (170g) mozzarella cheese or mixed with other cheese shredded


  • Preheat the oven to fan assisted 180C / 200C / 400F / gas 6.
  • Cook the pasta according to the packet instructions, till almost almost done. You want the pasta al dente.
  • Heat the oil in a frying pan, add the onion and pepper cook for about 5 mins until soft.
  • Stir in the garlic for 30 seconds until fragrant and mix in the diced tomatoes and simmer for 15 minutes.
  • Remove from the heat, stir in the cooked pasta and tuna and transfer into a casserole dish.
  • Add the cheese one top and bake for 20 mins until the cheese in melted.


Recipe Variations

  • change the vegetables such as adding/substituting with peas, mushrooms, broccoli, cauliflower, carrots, etc.
  • top the tuna fish casserole with panko, breadcrumbs, chips, or crispy noodles to add more crunch.
  • any type of pasta can work in a pinch, use what you have in your pantry.
  • Feel free to used canned salmon instead.

Weight Watchers Points

There are 6 Blue Plan SmartPoints in a serving of this tuna casserole.

Serving Suggestions


Calories: 229kcal | Carbohydrates: 42g | Protein: 7g | Fat: 3g | Saturated Fat: 1g | Cholesterol: 1mg | Sodium: 13mg | Potassium: 203mg | Fiber: 3g | Sugar: 4g | Vitamin A: 778IU | Vitamin C: 34mg | Calcium: 26mg | Iron: 1mg