To melt the chocolate in a microwave, heat at 50 percent power for 2 minutes, stir, then continue heating at 50 percent power for 1 more minute. If not completely melted, heat an additional 30 to 45 seconds at 50 percent power. Semisweet chocolate chips may be added for a bigger chocolate punch; if used, they will slightly increase the yield on the cookies. We recommend using a spring-loaded ice cream scoop to scoop the dough. Resist the urge to bake the cookies longer than indicated; they may appear under-baked at first but will firm up as they cool.