Slice the bananas into thick pieces and place them on a baking sheet lined with parchment paper.

Freeze the banana slices for at least 1 hour.

Melt the dark chocolate chips with coconut oil in the microwave, stirring until smooth.

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

Return the chocolate-coated bananas to the baking sheet and freeze again until the chocolate is set.