Layer ingredients in the order listed: peanuts, semi-sweet chocolate chips, german sweet chocolate, vanilla bark.
Cover and cook on low for 2 hours. As my aunt said in her recipe, do not "peek or stir".
After the 2 hour mark, mix well and drop onto parchment paper. Allow to cool and enjoy!
Notes
You'll want to be sure to place the ingredients in the crockpot in the order listed.
Try to place almond bark/chocolate as minimally around the sides of the crockpot/slow cooker as possible. If touching the side, it will have the opportunity to burn.
If the chocolate doesn't look fully melted after two hours, still stir it -- it will melt upon stirring and will be beautifully uniform.
For more even/beautiful chocolate peanut crockpot candy, dip the candy onto parchment paper with a small ice cream scoop.