Dorie Greenspan's World Peace Cookies - loaded with chocolate and oh-so-good you will want these for holidays this year.
Sift the flour, cocoa and baking soda together. Working with a stand mixer, preferably fitted with a paddle attachment, or with a hand mixer in a large bowl, beat the butter on medium speed until soft and creamy. Add both sugars, the salt and vanilla extract and beat for 2 minutes more.
Center a rack in the oven and preheat the oven to 325°F (160°C). Line two baking sheets with parchment or silicone mats.
If you find it difficult to shape the dough into a log, do it between a piece of parchment paper. To avoid very crumbly cookie dough when slicing, ensure that the butter is soft at room temperature before mixing, the chocolate chunks are small and the dough cold but not freezing. Let it rest on the counter for 5 to 15 minutes after being removed from the fridge or freezer. To avoid spreading cookies, chill the tray of sliced cookie dough for 5 to 10 minutes before baking. If the log breaks while cutting, just rearrange the crumbs and press them together again to form a round cookie.