Preheat oven to 425 degrees. Halve or quarter potatoes lengthwise into bite-size pieces. Place them in 13- by 9-inch gratin dish or shallow baking dish, and add garlic, oil and rosemary, and salt and pepper to taste; don't under salt potatoes or they'll taste flat. Sprinkle water or broth over potatoes, then spread evenly in dish.
Cover dish with lid or foil, leaving a gap so steam can escape. Place dish on center oven rack, and cook potatoes for 15 minutes. Remove covering, and stir potatoes. Bake, until they test done when pierced with a paring knife, about 15 minutes. Remove from oven, and sprinkle 1 teaspoon of balsamic vinegar over potatoes, stirring to coat. Serve hot.
Comments: Serve these with veggie burgers and a salad, or enjoy them for Sunday brunch with eggs.
Description: "If you're looking for a simple potato dish to throw together for dinner, this version is perfect."