To a mixing bowl, add the tomatoes, basil, salt and pepper. Stir and mix well and let sit for about 20 minutes so the flavors can meld. Taste for salt.
Meanwhile, lay the slices of prosciutto onto a non-stick baking pan. Roast the prosciutto slices in the oven for about 5 minutes until crispy. Remove from the oven and allow to cool in pan.
Arrange the slices of ciabatta on the same baking pan and drizzle the tops with olive oil. Bake in the oven for about 10 minutes or until you see the tops browning. Remove the ciabatta slices from the oven and allow to cool.
Take the peeled garlic clove and rub over each of the ciabatta slices.
Divided the tomato mix evenly on top of each bread slices. Take the slices of prosciutto and crumble on top.