Slice 12 rolls in half (lengthwise) and place on a baking sheet. Drizzle with olive oil, and rub each half with several peeled, whole pieces of garlic.
Broil for 1-2 minutes, or until toasted.
Remove 12 top halves, and add a thick slice of mozzarella cheese to the bottom 12 halves. Broil 2-3 minutes until the cheese has melted and turns a little brown on top.
Remove from the oven and place a thick slice of tomato on top of the cheese, followed by a large basil leaf. Place the top back on and press down. Optional to use a skewer.