Pasteles en Hoja are popular in the Dominican Republic and Puerto Rico. A plantain (or unripe banana) and root batter is used as the base then they can be stuffed with beef (most common stuffing), chicken, or whatever strikes your fancy.
Pureé the batter ingredients until there are no clumps but feels like grains of sand in it. It may take 5-10 minutes depending on the blender/processor.
Put 2.5 tbsp of the batter mix on a plantain square. Put 2 tbsp of filling in the center. Cover with 2 more tablespoons of the batter. Fold the leaf square and wrap tightly in parchment paper.