Cut open the roll and spread both sides with cream cheese light.. Drain a can of Deepblue tuna, while washing the lettuce. Dice the red onion into small cubes. Mix the tuna and onion. Spread one half of the roll with lettuce, the tuna and the onion bits. Optionally pour some fresh vinaigrette on top and flavour with salt and coarsely ground pepper. Add some slices of fresh tomato as a garnish.
