Scoop melted chocolate into 12 truffle molds, just enough to cover the surface. Set leftover chocolate aside. Freeze for 5 minutes to set.
Place your cream cheese into a bowl. Scrape off cream for 2 Oreo cookies and add it to the bowl with the cream cheese. Put your cookies into a plastic bag and crush them with a rolling pin until fine crumbs form. Combine cream cheese and cookie crumbs until they form a thick paste (you may need to use your hands). Form the mixture into thin discs, about the size of the truffle molds. Freeze for 5 minutes to set.
Fill your chocolates (still in the molds) with 1/4 teaspoon sprinkles, and add your frozen cookie and cream cheese disc on top of each chocolate. Pour remaining chocolate over each chocolate to seal, and freeze for another 5 minutes.
Once set, pop the chocolates out of the molds, drizzle with white chocolate, and enjoy!