In a small pot, melt and heat together the butter and caramel. Whisk until smooth.
Crush biscuits with either a rolling pin or food processor and add to a large bowl.
Cut banana lollies in half and add to the large bowl.
Pour melted butter and caramel mixture in to the large bowl and mix well.
Roll dough into a log shape, coat with chocolate hail and refrigerate for 3-4 hours.
Slice log into desired segments and serve! Now it wouldn't be banoffee without a cream element, so you could serve some whipped cream alongside for dipping. Naughty I know!
Recipe by Baker Gatherer at https://bakergatherer.com/banoffee-lolly-log/