Preheat the oven to 190C/375F/Gas 5. Place the butter, sugar, cream and maple syrup in a small pan and heat gently, stirring from time to time until smooth.
Meanwhile, roughly crumble the cake into a small ovenproof dish. Slice the banana and mix with the cake.
Pour over the sauce and bake for 10 minutes until bubbling. Serve warm with cream or custard.
Type the ingredients you want to use, then click Go. For better results you can use quotation marks around phrases (e.g. "chicken breast"). Alternatively you can search by chef, programme, cuisine, diet, or dish (e.g. Lasagne).