Add the peanuts and 1/2 cup sugar to a food processor or blender. Blend until finely ground and the peanut become powder like. Be careful not to blend the peanuts into peanut butter. Stir (meaning do not blend, just use a spoon) in the remaining cup of sugar and the cinnamon. Transfer to a jar. The sugar can be kept at room temperature for up to 1 week.
Add the coconut milk to a small sauce pan and bring to a low boil. Remove from heat and stir in the chocolate until melted and smooth. Stir in the ancho chili powder, cinnamon and vanilla. To rewarm the sauce before serving, just place over low heat for about minutes. Just be careful not to burn it.
In shallow, but wide bowl, combine the flour, rice flour and baking powder. Stir in the coconut milk and beer. If the batter seems thick, just add more beer to thin. It should be thick, but pourable.
Heat a large pot of oil over medium heat. Stick a bamboo skewer through the middle of each banana. Dip the bananas one at a time through the batter until evenly coated, then carefully lower into the hot oil. Fry for 2-3 minutes on each side, until golden crisp. Using a slotted spoon, remove the fritters and drain on to paper towels. Repeat with the remaining bananas and then sprinkle the fritters with lime zest if desired.
When ready to serve, dust the fritters with peanut sugar and serve with warm chocolate sauce and lime wedges.
*Inspired/adapted from Delicious Magazine April 2015 Issue.