Marks and Spencer had sold out of their double choc muffins, so I decided to make my own! I added a lot of dark coco powder to my usual muffin recipe and huge chunks of plain chocolate. It worked. My husband gave me 7.5 out of 10, as opposed to M&S rating 8 out of 10. I'm pleased with that rating as my first attempt!! To get my rating up, I am told I need to add extra choc chunks on the top of the muffin. No problem!!