01 - Line a baking sheet with parchment paper.
02 - Peel the bananas and cut into ½ inch thick rounds. Arrange evenly on the prepared baking sheet.
03 - Place the banana slices in the freezer for 30 minutes until firm.
04 - In a heatproof bowl over simmering water, melt dark chocolate with optional coconut oil, stirring until smooth; then remove from heat.
05 - Dip each frozen banana slice into the melted chocolate using a fork, coating all sides. Allow excess chocolate to drip off and return slices to the parchment-lined sheet.
06 - Sprinkle chopped peanuts over the chocolate-coated bananas immediately before the chocolate sets.
07 - Freeze the assembled banana bites for at least 30 minutes until the chocolate hardens.
08 - Transfer the bites to an airtight container and keep frozen until serving.