These are killer. Seriously. Don't make these if you are on or near a diet. I found them on a blog when I was looking for a way to use up the insane amounts of hot cocoa mix I have on hand. I made them with Starbucks' mix which contains only cocoa, vanilla and sugar, so I'm not sure how other brands will turn out. If you use a brand that is very sweet, adjust the sugars accordingly. I also slightly packed my flour to see if they would come out more cakey (they did). This batter does not need to be refrigerated before baking. I tried 2 batches each way and the cookies actually came out better when the dough was at room temperature.