Cut the garlic and rub a serving a slice of bread lightly, then discard the garlic.
Slice the tomatoes into 1/4-inch slices, discarding the top and bottom if you choose. Slice the mozzarella into slices approximately the same size as the tomato slices, interleaving the slices. Add salt and pepper to taste.
Chop the basil roughly and sprinkle on top of the sliced tomatoes and mozzarella. Drizzle the olive oil over the entire dish. Let sit for a few minutes, then serve and enjoy it with bread.