Peel the bananas and cut them into thick slices.

Line a baking sheet with parchment paper.

Place the banana slices on the baking sheet and freeze for about 1 hour.

Melt the dark chocolate and coconut oil together in a microwave-safe bowl.

Dip each frozen banana slice into the melted chocolate, ensuring they are fully coated.

Return the chocolate-coated banana slices to the baking sheet and freeze until the chocolate is set.