Preheat oven to 425 degrees.

Wash sweet potatoes well and slice a small part off the bottom so it sits flat. 

Cut thin slits in the potato stopping ¼" from the bottom.

Place on a baking sheet.

In a small bowl, mix olive oil with minced garlic, fresh chopped parsley, salt and pepper.

Pour over potatoes, pushing herbs down in between slices.

Bake for 40-50 minutes or until tender.

Serve with a dollop of sour cream or Greek yogurt if desired.