Place the white candy melts and 1 ½ teaspoons vegetable oil in a microwave safe bowl.
Microwave the mixture in 30 second intervals, stirring after each interval, until the candy melts are fully melted.
Dip the Oreo Cookies in the melted candy melts with a fork. Tap the fork on the side of the bowl to remove any excess chocolate from the cookie.
Then place the cookies on a baking sheet lined with parchment paper.
Continue this process until all the cookies are coated.
Place the baking sheet in the refrigerator for at least an hour for the chocolate to fully set.
Then place the chocolate chips and remaining vegetable oil (½ teaspoon) in a microwave safe bowl.
Microwave in 30 second intervals, stirring after each interval, until fully melted.
Pour the melted chocolate in a piping bag or a zip lock bag with one of the corners removed.
Drizzle the chocolate over the cookies.
Refrigerate for 15 more minutes for this chocolate to set and then the cookies are ready to serve and enjoy!