Adding drizzled chocolate is entirely optional, but should you chose to go that route, I achieved the best results with microwaving semi-sweet chocolate chips at 50% power for one minute at a time, stirring between each interval. In my microwave, it took about three minutes to melt one cup of chocolate. As far as drizzling goes, I tried using a fork (not very easy to control), but found that it was much easier to place the warm melted chocolate in a quart-sized ziploc freezer bag and snip a tiny hole in the corner. This creates a makeshift pastry bag that produces a nice, even zig zag drizzle every time. Better Homes and Gardens magazine has a great article about melting, dipping and drizzling chocolate here if you are interested in learning more.