Crush Oreos into fine crumbs. Pour crumbs into large mixing bowl.
Add cream cheese, then mix crumbs and cream cheese until dough reaches a playdough consistency.
Roll filling mixture into 1" balls and place on wax-paper lined baking sheet.
In a microwave safe bowl, pour chocolate chips. Melt chips by microwaving in 30 second burst, stirring in between.
Roll balls in the chocolate, then place back on wax paper.
Chill balls in the fridge until chocolate hardens, approximately 30 minutes.
In a microwave safe bowl, pour white chocolate melts. Melt by microwaving in 30 second burst, stirring in between.
Working in batches, drizzle melted white chocolate over hardened truffles. Press spider sprinkles into white chocolate before it hardens.
Allow white chocolate to harden, then serve!