Tuna Potato Gratin

Prep Time
Cook Time
1h 30m
Ready In

"I found this recipe from Safcol, and we really did enjoy this for dinner. I served with salad and the whole family did enjoy this version of Tuna Casserole. You will need a floury potato ~ a type that is easy to mash ~ Not sure if Sebago is a potato type in your neck of the woods, but this is the type I used and it worked wonderfully well."

Original is 6 servings


  • Serving Size: 1 (364.1 g)
  • Calories 566.5
  • Total Fat - 34.5 g
  • Saturated Fat - 16.5 g
  • Cholesterol - 516.8 mg
  • Sodium - 548.6 mg
  • Total Carbohydrate - 37.3 g
  • Dietary Fiber - 5.7 g
  • Sugars - 1.6 g
  • Protein - 26.6 g
  • Calcium - 215.1 mg
  • Iron - 3.7 mg
  • Vitamin C - 6.9 mg
  • Thiamin - 0.3 mg

Step by Step Method

Step 1

Place onions in a microwave safe bowl and place in microwave for 2 minutes or until transparent, place in a lightly oil pan and fry for a few minutes until transparent and set aside.

Step 2

Place the potatoes into a saucepan and cover with cold water season the water with salt and bring potato's to the boil; Turn down to a gentle simmer and cook for 20 minutes or until just tender.

Step 3

Drain potato's well and then mash with potato masher., until well mashed and return potato to saucepan then add the butter, a handful of both parmesan and cheddar cheeses, then the onions and incorporate through with a spatula.

Step 4

Whisk together the cream, egg yolks, salt and pepper and nutmeg and carefully fold through the mashed potato.

Step 5

Now add the corn and tuna and fold through again; Season to taste.

Step 6

Place dollops of mix into a baking dish and smooth out on top then sprinkle over the remaining cheese's & sprinkle with fresh chives.

Step 7

Bake in the oven for 20-25 minutes or until golden brown.

Step 8

Serve with a salad.


No special items needed.

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