Preheat oven to 400 degrees. Place sweet potatoes on baking sheet (careful not to overcrowd pan), drizzle with Butter EVOO. Toss with sea salt and spices. Roast for about 25 minutes until tender. Toss with spatula, then sprinkle with brown sugar before roasting for an additional 15-20 minutes until golden and caramelized. Taste and add salt, if needed.