Prepare the Plantains: Peel the plantains, cut each one in half, then cut each half lengthwise to create four pieces per plantain.
Arrange the Cinnamon: Place the cinnamon sticks in the bottom of a pan, creating a fragrant base for the plantains.
Add the Plantains: Arrange the cut plantains over the cinnamon sticks with the cut sides facing upward.
Season the Plantains: Sprinkle the sugar, salt, and ground nutmeg evenly over the plantains.
Add Vanilla Coconut Milk: Place the split vanilla pod in the pan, then pour the coconut milk over the plantains.
Bring to a Boil: Bring the coconut milk mixture to a boil and cook for 10 minutes.
Simmer Gently: Reduce the heat to low and continue cooking for 35 minutes, watching carefully to make sure the mixture does not burn.
Serve: Arrange the cooked plantains on a plate and serve.