"Buttery toffee and toasted pecans join up in a rich chocolate cookie; all that’s missing is a cold glass of milk. What to buy: Skor or Heath bars work best in these cookies. The delicious flavor of these cookies requires an excellent-quality cocoa powder with a 20 to 24 percent fat content. Chocosphere is a fantastic Internet chocolate resource. Game plan: If you decide to use homemade or real-butter toffee, the toffee pieces will melt faster, giving the cookies a lacier appearance. The cookie dough can be made ahead and refrigerated for up to 24 hours; it can also be stored in a resealable plastic bag in the freezer for up to 2 months. In either case, allow the dough to come to room temperature before baking. This recipe was featured as part of our Holiday Cookies recipe slideshow. cbsiAdGlobal.BYPASSKEY='gotmilk'; cbsiAdGlobal.DVAR_TAG = 1;..."