Clean the potatoes with skins on. Cut slits on top of each potato approximately 1/8 inch apart (careful not to go all the way through). [Chop sticks or wooden spoons along each side will help prevent cutting all the way through the potato.] Place on baking sheet.
Place a garlic sliver between each slit. Sprinkle with salt and pepper. Drizzle with olive oil.
Bake 1 hour. Baste with pan oil then bake another 30 minutes. [The potatoes will gently arch as the slits slightly fan out making for a pretty as well as tasty presentation.].