As I mentioned before, I never used to be a big fan of shortbread. Maybe because it wasn't sweet enough for me. In the past few years though, I have started baking it more, and have discovered a few important lessons. The most important being that you really do need to make sure that the butter is softened. The first time I made these cookies I had to make the dough twice, because the first batch crumbled. With butter at the right temperature it was much easier to work with. I love the mix of orange and chocolate in this recipe.