Because the chocolate dough is dark, it can be tough to see when death by chocolate cookies are done. To confirm your cookies are done baking, lightly tap the edge of a cookie (be careful, they'll be hot). If it feels slightly set, they’re done. The centers may still look very soft and a little shiny, that’s ok. They will continue to set up as you cool them on your pan before transferring them to a wire rack to cool completely.