Thick & Chewy Double-Chocolate Cookies

Makes about 42 cookies

This recipe and the others from my week o' cookies (Gingered Sugar Cookies, Chewy Oatmeal-Raisin Cookies, and Peanut Butter Cookies) are all from [http://www.amazon.com/Baking-Illustrated-Best-Recipe-Classic/dp/0936184752/ref=sr_1_1?ie=UTF8&s=books&qid=1200976976&sr=8-1m Baking Illustrated]. It's more or less the only baking book I use be