I love Tuna From a can a good quality one like Sirena is best. Here's my favourite tuna recipe I threw together.

TUNA & MUSHROOM STUFFED TOMATOES
(Created by Trev)

Ingredients:
6 large tomatoes
Salt & pepper
30g butter
3 tbsp plain flour
300ml milk
250gm tuna (flaked)
6 mushrooms (diced)
½ green capsicum (diced)
1 brown onion (diced)
100gm cheddar cheese, grated

Preparation:
Heat oven to 190C.
Sauté onions. Capsicum and mushrooms until flavour released and colour turned. Remove from pan and set aside.
Cut tops off tomatoes. Hollow each one out, removing seeds and some flesh. Sprinkle lightly with salt inside and turn upside down to drain.
Meanwhile, heat butter and stir in flour. Off heat, whisk in milk. Return to heat and bring to boil, whisking continuously, until smooth and thickened. Remove from heat. Stir in tuna, mushrooms, capsicum, onions and half the cheese. Season. Divide mixture into tomato shells. Sprinkle with remaining cheese.
Bake for 15 minutes until topping is golden brown.
Serve on a bed of tomato flavoured noodles or rice.