Remove the bananas from the freezer and allow to defrost for 15 minutes. Chop the dark chocolate into chunks.
Place the bananas and the peanut butter in a food processor and blend for about 2 minutes until smooth and creamy. The mixture will start off crumbly but stop and start the processor a few times, scraping down the sides in between and you will be left with some creamy magic!
Transfer the ice cream to a bowl and use a spatula to fold through the dark chocolate chunks. Freeze until firm. The ice cream will keep in the freezer for 1 month.
Once frozen, serve in a bowl with more chocolate chunks.