This is such a great recipe. The thing I love most about it is how simple it is. All you need to do is buy some ready-made puff pastry, split a few bananas in half and get something magical happening in the oven! You just have to be extremely careful when you flip it out on to a board as hot caramel can burn quite badly. It's best to cover your hand with a tea towel and make sure you concentrate on what you're doing. And if you don't like bananas, try using apples or pears.