Start by placing parchment paper on a cookie sheet and set aside.
Place the orange melting chocolate into a microwave safe bowl and melt in 30 second increments, stirring after each. Once melted, completely coat the cookie in chocolate, being sure to shake off any excess. Place on the prepared baking sheet.
Continue with the desired amount of cookies and then let dry.
Place the chocolate, or dark melting chocolate, into a microwave safe bowl and melt in 30 second increments, stirring after each. Once melted, spoon into piping bag and cut off the tip.
Pipe a pumpkin face onto the chocolate covered Oreos. Continue with the all of the cookies and then set aside to let chocolate set.
Once the chocolate has set, the Oreos can be store in an airtight container at room temperature. Place them in a single layer, with parchment paper on top if you need a second layer.
Notes
The Oreos may be frozen for up to 2 months. Bring the cookies to room temperature before serving.