Preheat oven to 425 F

Method 1: Combine all of the ingredients in the pan, ensuring that the potatoes are properly coated. Place the cast iron pan in the oven and roast for about 30-40 minutes, until the potatoes are golden brown on the outside and soft on the inside. Give the potatoes a toss after about 15 minutes to ensure even cooking.

Method 2: Heat the oil in the pan over high heat. Add the potatoes and sear for about a minute, until lightly golden brown. Flip or toss the potatoes and sear for another minute. Sprinkle the salt, pepper, minced garlic and rosemary and stir well to ensure that the potatoes are properly coated. Transfer the pan to the oven and roast for about 20-25 minutes, until the outside is deep golden brown and the inside is tender. Flip the potatoes once after about 10-12 minutes.