Candied yams are made by slicing sweet potatoes, placing them in a baking dish, and coating them generously with butter, brown sugar, cinnamon, and nutmeg. You bake the mixture in the oven until the sweet potatoes become tender and the sugar melts into a thick, sweet syrup. Some recipes also include miniature marshmallows layered on top during the final minutes of baking for an extra sweet touch. This classic side dish is a holiday favorite served during Thanksgiving and family dinners.