Preheat oven to 350 Degrees Fahrenheit. Peel and halve 4-6 garlic cloves, placing into 2-quart casserole dish. Gently scrub potatoes until clean, careful to keep skin in tact. Cut into 2" cubes and toss with garlic, adding rosemary. Pour 1/2 cup of broth over mixture. Cover and bake 1 hour or until cooked through. Mash while hot, adding remaining broth until creamy. Add salt/pepper to taste. NOTE: Vegetable broth can be used for a great vegetarian-friendly version of this dish.