This Christmas chocolate traybake is perfect for a get together or school bake sale. Preheat the oven to 180C/160C Fan/Gas 4and line a 30cmx25cm/12inx10in cake tin with butter and baking paper.

This rich and creamy Yule log is not for the faint-hearted - it's a decadent triple-chocolate Christmas treat ... With one bold movement, turn the whole cake onto the sheet of paper, then lift ...