Preheat the oven to 375°F. Spread 1 tablespoon of butter evenly on the inside of a shallow baking dish.

In a small bowl, combine the brown sugar and granulated sugar.

Place the whole plantain pieces in the prepared baking dish. Sprinkle 4 tablespoons of sugar mixture over the plantains. Pour the wine and maple syrup over the plantains, and gently stab each plantain with 3 small pieces of cinnamon stick. Sprinkle with the remaining 4 tablespoons of sugar, the cinnamon, and salt. Dot small pieces of the remaining 3 tablespoons of butter over the plantains.

Bake uncovered for 50 to 60 minutes or until the plantains are fork tender and golden brown.