I love how easy it is to use one cheap ingredient to make many amazing things. From time to time I make a big batch of banana leather to have on hand for various uses. It makes the best raw crepes (something that I learned a few years ago from Alissa Cohen), and is especially great for travelling. Cut the leather into squares, top it with some almond butter and berries - you've got a banana nut butter sandwich!
Now hold them for a minute or two to "set" the roll up (to hold their shape). These can now sit for as long as you want like this until you are ready to fill them.
For the filling, spread either some vanilla cream, or chocolate cream into the bottom of the tarte. Now top with a layer of sliced bananas and drizzle with a sauce of your choice. I've made a dark caramel sauce using dates/soak water/vanilla. I also sprinkled a light layer of shredded coconut in between the bananas and filling.