Valentine Treats (and Costco advice)

First, the advice: Never go to Costco when you are hungry, unless you don't mind coming home with a few extra purchases. Though I have a fine selection of cookbooks and though the internet provides more recipes than one could bake in a lifetime, I HAD to buy the Martha Stewart Cookies book. For this recipe. Which, I later discovered, is here. The recipe is definitely a keeper. I baked these Surprise Cookies for the office (and the boys) for Valentine's Day. The 'surprise' is a marshmallow melted in the center of the cookie, then covered with frosting. I used my new King Arthur Flour cookie scoop and wonder why I waited so long to buy this handy gadget. The cookie scoop was almost a necessity with this recipe, as the dough is very sticky--like a very thick cake batter. Parchment-lined cookie sheets were also a necessity: the cookies are very fragile until they are cool. I forgot to sift the cocoa for the frosting and ended up with tiny bits of cocoa powder, which no amount of whisking or whipping could disperse. No one complained, but still. For perfection, sift the cocoa.