Butter both sides of two slices of bread.
Toast bread until golden brown.
Place bread on a paper towel.
Make vinaigrette using olive oil and lemon juice, with salt and pepper to taste.
Place ingredients in a jar and shake.
Generously spread vinaigrette on one slice of bread.
On the other slice of bread, spread a small amount of garlic sauce.
Place tomato on the bread with the vinaigrette. (I forgot to buy tomato so I used sundries tomato). Put salt and pepper on top to taste.
Place lettuce on top.
Open sardine can. Note: you can substitute sardines for tuna or any other fish.
Place sardines on top.
Sprinkle feta cheese on top.
Close the sandwich.
Place on plate.