Preheat oven to 400°F.
Combine sweet potatoes and oil in large bowl; toss. Divide sweet potatoes between baking sheets, spreading evenly. Sprinkle generously with salt and pepper. Roast until almost tender, turning occasionally, about 35 minutes depending on size.
(Can be prepared 2 hours ahead. Let stand uncovered at room temperature.)
In a heavy bottomed saucepan combine Goslings Black Seal Rum, maple syrup, lime juice and cinnamon and bring to a boil, reduce to simmer and cook for 10 minutes. Drizzle over sweet potatoes, toss to coat. Roast until sweet potatoes are tender and syrup is reduced to glaze, about 10- 15 minutes. After sweet potatoes are done roasting, pan drippings may need to be further reduced separately to achieve glaze.
Serve hot.

Photo Credit to Eva L. Baughman