Recipe? There is really no need for a recipe, but here's one for the hell of it. Find a really good bread, something crusty and with a nice spongy crumb. Keep in mind that the crust will get crispy, so it is nice to have one that has a decent diameter, so there is a good crust to crumb ratio.
Slice the bread into 3/4" slices. Rub slices of bread with garlic cloves. Gently oil or butter each side of the slices.
Heat grill or pan over med-high heat. When hot, oil grates with a paper towel dipped in a bit of cooking oil, then grill each side until gently golden (@2-3 min on each side depending on heat level.)
Season with sea salt and black pepper. Serve immediately or top with preferred topping and serve.