Using serrated knife, cut focaccia into 20 thin slices about ¼-inch thick.
Place bread slices on a baking sheet in a single layer (you'll may need more than one). Brush lightly with olive oil. Flip, then brush the other side with oil.
Sprinkle slices lightly with salt.
Bake for 5 to 10 minutes, or until crisp throughout and lightly golden (no need to flip).
Serve with your choice of toppings. Enjoy!
Notes
Bread - You can easily size this recipe up or down, depending on how much focaccia you have. If you're starting with a large slab, begin by sectioning it into smaller pieces about 2 ½ to 3 inches wide, then cut these sections in thin slices about ¼ inch thick. The finished toasts should be just big enough for two bites.Garlic Flavored - For garlic crostini, rub the baked toasts with the cut side of a halved garlic clove.Toppings - Almost anything can be used as a crostini topping, including cheeses, fruits and veggies, jams and spreads, fresh herbs, and nuts. I used these toasts to make this Tomato Goat Cheese Crostini, but you'll find lots of other topping ideas before this recipe card.