Cut the tomatoes into slices and arrange on a platter
Chop the garlic clove very small and spread it over the tomato.
Sprinkle with oregano.
On top of each tomato slice, put a piece of cheese and finish with a piece of anchovy.
Dress with oil, vinegar and salt, to taste.
It can be put in the oven for a few minutes to melt the cheese, and serve warm. In this case, you have to be careful with the salt because that of the anchovy becomes more intense in the heat. Another option is to put the anchovy when you take it out of the oven