01 - Line a baking sheet with parchment paper to prevent sticking.
02 - Cut bananas into ½-inch thick rounds and arrange in a single layer on the prepared baking sheet.
03 - Place the banana slices in the freezer for at least 1 hour until firm.
04 - Gently melt the dark chocolate with coconut oil (if using) in 20–30 second bursts in the microwave or over a double boiler, stirring until smooth.
05 - Remove frozen banana rounds and dip each into the melted chocolate using a fork or toothpick, ensuring full coverage.
06 - Place coated banana bites on the baking sheet and immediately sprinkle with your choice of toppings before the chocolate sets.
07 - Return the tray to the freezer for at least 1 hour until the chocolate is firm.
08 - Serve frozen. Store leftovers in an airtight container in the freezer for up to 2 weeks.