In a large mixing bowl, combine the softened cream cheese, crushed Oreo cookies, and vanilla extract. Mix until well combined and smooth.
Using your hands, form the mixture into small balls, about 1 inch in diameter, and place them on a baking sheet lined with parchment paper.
Once all the mixture is shaped into balls, refrigerate for at least 30 minutes to firm up.
While the truffles are chilling, melt the semi-sweet chocolate chips and coconut oil together in a microwave-safe bowl in 30-second intervals, stirring in between, until smooth.
Remove the truffles from the refrigerator. Dip each truffle into the melted chocolate, allowing any excess to drip off, and place them back on the parchment-lined baking sheet.
Optional: For added decoration, sprinkle crushed Oreos on top of the chocolate before it sets.
Refrigerate the truffles again for about 15-20 minutes, or until the chocolate is fully set.