Line a baking sheet with parchment paper to prevent sticking.
Peel the bananas and slice them into ½-inch thick rounds.
In a microwave-safe bowl, combine the dark chocolate chips and coconut oil. Microwave in 30-second intervals, stirring between each, until melted and smooth.
Dip each banana slice into the melted chocolate, using a fork to ensure even coverage.
Place the chocolate-coated banana bites onto the prepared baking sheet.
Before the chocolate sets, sprinkle the tops with chopped nuts and a pinch of sea salt if desired.
Place the baking sheet in the freezer for about 30 minutes, or until the chocolate hardens.
Once set, remove from the freezer and enjoy immediately or transfer to an airtight container and store in the freezer for up to a week.
Notes
Store in an airtight container in the freezer for up to a week.