Heat oven to 400 degrees F.
Cut potatoes in half or quarters; toss with olive oil, salt, pepper, and garlic until well coated.
Spread potatoes in one layer on baking sheet, roast at least 1 hour, or until browned and crisp.
Flip twice with a spatula during cooking to ensure even browning. Remove potatoes from oven, toss with minced parsley; season to taste.