Peel the bananas and cut them in half lengthwise, then divide each half into two parts to get eight banana slices. Place them on a baking sheet lined with parchment paper.

Spread peanut butter generously over each banana slice, sprinkle lightly with sea salt and chopped peanuts.

In a microwave-safe bowl, combine dark chocolate chips and coconut oil. Microwave in short bursts until fully melted and smooth. Drizzle over banana slices.

Place the banana slices back on the baking sheet and freeze for at least an hour until firm.