Simply Suzanne's Lotsa Chocolate Granola. It is vegan, nut-free, and really tasty! It's also made in my home state of Michigan. The ingredient list is simple and includes things like cinnamon and black pepper in addition to the chocolate, brown sugar, and maple syrup for a great balance of sweet and savory. They have a few other flavors listed on their website that I will be interested to try, but this chocolate is pretty darn good!
(For some reason, the Lotsa Chocolate flavor is not listed as vegan on their website, though it appears to be totally vegan based on the ingredient list.)