Pulse Oreos in a food processor into fine crumbs. Add in block of cream cheese. Dump mixture into a medium sized bowl. If you don't have a food processor, you can put them in a resealable plastic bag and crush. Just make sure they are crushed very finely.
If processor is not large enough, add the cookie crumbs and block of cream cheese to a medium sized bowl. Use your hands to combine, so it is evenly mixed and almost resembles a dough.
Scoop out 1 tbsp of mixture at a time and form into a 1 inch ball. Place on a parchment paper-lined baking sheet. Repeat until all of the cookie mixture has been used.
Place in freezer for 15 minutes.
In a small bowl, add 8 oz of white chocolate chips and 1.5 tbsp of coconut oil. Melt in the microwave in 15 - 30 second bursts, stirring in between, until the chocolate is melted and smooth.
Remove truffles from freezer. Place a truffle, one at a time, into the melted chocolate and use a fork to turn it over and evenly coat. Place the coated truffle back onto the baking sheet.
Repeat to complete a row of truffles and then immediately add sprinkles. We like to dip a row at a time rather than doing the entire tray, so they don't harden before you can add the sprinkles.
Continue on to the next row of truffles, coating in chocolate and adding sprinkles, until the white chocolate is done. Then, melt your semi sweet chocolate with 1.5 tbsp of coconut oil in a small bowl and repeat the last couple of steps until all truffles are coated in chocolate and decorated.
Allow chocolate to set for about 10 minutes. Store in an airtight container in the fridge.