Bring 1 can of coconut milk, 1 cinnamon stick, 1/2 tsp salt and 1 cup of water to a boil on medium heat.
Wash and dry your green plantains before peeling. Cut off the top and bottom ends of each finger of banana. Make a slit lengthwise in the plantain and used your fingers to remove the skin. Ensure to remove any remaining green bits on the plantain, otherwise, it will leave a stain taste in your porridge.
Cut your plantains into pieces and add to a blender with 1 cup water, 1/2 tsp nutmeg, 1/4 tsp cinnamon, and 1/2 cup milk. Blend until smooth.
Add your plantain mixture to your pot and whisk briskly to avoid any lumps from forming.
Cover and reduce the heat to medium low and cook for about 15-20 minutes. Stir every 5 minutes to prevent any lumps from forming.
Add in your condensed milk, vanilla and brown sugar, then turn off the heat.