Line a large baking sheet with parchment paper or a silicone baking mat and set aside.
Add the white chocolate to a double boiler (or microwave safe bowl, if microwaving) and melt until completely smooth. If you do use a microwave, I suggest microwaving it in 20-30 second increments and stirring well after each increment.
Pour the melted chocolate onto the prepared baking sheet and evenly spread it out into a large rectangle.
Evenly distribute the candy corn and peanuts on top and gently press them down into the chocolate.
Transfer to the refrigerator for 25-30 minutes, or until the chocolate has completely harden. Use a knife to cut the bark into pieces.
Notes
Store leftover bark in an airtight container in the refrigerator for up to one week.