1In a medium bowl, mix together mashed banana, peanut butter, honey, peanuts, and plain yogurt until fully combined.
2Spoon mix onto a parchment-lined baking sheet and flatten into a disc shape.
3Put in the freezer for about an hour until fully hardened.
4Remove from freezer and completely coat in melted chocolate. Place back onto parchment paper and sprinkle with sea salt if desired. Return to freezer for a few minutes until hard.