First of all prepare your favorite pizza or focaccia dough. You can find the recipe that I used here
All you need now is prosciutto. Cut about 3 thick slices and reduce them in little cubes. This actually depends on how much dough you make and how much prosciutto you wish to eat! :D
I made half the dose of that pizza recipe and 3 or 4 thick slices of prosciutto were enough for me.