Drizzling Oreos is very simple. If you are not fussy about how perfect they will look, you can just dip a fork in the chocolate and drizzle the chocolate from side to side over the Oreo. If you want to be more precise with your drizzle use a piping bag with a very fine tip attached or cut the tiniest slit in the bag so you can control the amount of chocolate that you pipe over the Oreos. Be sure to have wax or parchment paper under your Oreos for easy clean up!