You know you're a grown-up when your mom starts asking you for recipes. I think this might have been the first recipe my mom ever asked me for. I'm fairly sure I included a batch of these cookies in a box of Christmas presents- or maybe I made them when she made a trip out to visit? I dunno. Like I said, I'm getting old. Memory fails. :-) Regardless, my mom called and asked for the recipe and of course I obliged. These really are the perfect snickerdoodle- they're crinkly and crisp on top…