- Blend the tuna very well by hand.
- Add the mayonnaise and mix well.
- Place 1/2 of the tuna mixture on each slice of bread.
- Place 1/2 of the onion and tomato on top of the tuna.
- Place 1 slice of cheese on top of the vegetables.
- Sprinkle with pepper to taste.
- Toast on 350 for 10 minutes.
- Optional: Rub garlic underneath each of the 2 tuna melts.
2 tuna melts count as 1 lunch