01 - Preheat oven to 400°F. Scrub sweet potatoes, pierce each several times with a fork, and arrange on a lined baking sheet. Bake for 45 to 50 minutes until easily pierced with a fork.
02 - While sweet potatoes bake, melt butter in a skillet over medium heat. Add diced apples, ground cinnamon, ground nutmeg, and a pinch of salt. Sauté for 5 to 6 minutes until apples soften slightly.
03 - Stir in walnuts and maple syrup. Continue to cook, stirring, for 2 additional minutes then remove from the heat.
04 - When baked sweet potatoes are cool enough to handle, cut a slit lengthwise in each and gently open to expose the flesh. Fluff the inside lightly with a fork.
05 - Spoon the warm apple-walnut mixture evenly into each sweet potato. Top with dried cranberries and chopped parsley if desired.
06 - Serve warm as a vegetarian main or hearty side dish.