Our friend Ruth gave us the original idea for this Christmassy treat – with a bit of tweaking we’ve made it gluten free and sugar free, although there is technically sugar in candied peel and glacé cherries – you can just omit these if you like – it will still work very nicely! It’s not really a cake – more of a nutty fruity slab ! Which means it’s quite solid – ( in a good way! )…