Cut the French loaf into thin slices, about 1/2-3/4 inch thick. Place all crostinis onto a baking sheet, leaving just a little room between each.
In a small bowl, combine 3 T olive oil with 1 t salt and 1 t pepper.
Using a small brush, gently paint the olive oil mixture onto one side of each crostini.
Pop into a 350 degree oven for 10 minutes. Pull out baking sheet, flip each crostini over, drizzle with olive oil, top with freshly cracked sea salt and pepper, and bake again for 5 minutes.
Pull entire baking sheet out and set on top of stove. Rub a raw garlic clove over the top of each piece of bread, until entire clove is used amongst all crostinis.
Lay a medium-sized slice of mozzarella upon each piece. Note: You want the mozzarella to cover almost the entire surface of the bread!
Pop back into the oven for about 7 minutes, until the mozzarella is melted.