Add chocolate chips, candy corn, peanut butter and sweetened condensed to the bowl of your slow cooker. Cover and cook on high for 30 minutes, stirring every 10 minutes until chocolate has melted. (The candy corn will be softer but not melted yet).

With a wire whisk, stir in 2 cups of the milk until smooth. Gradually stir in remaining 6 cups of milk.

Cover and cook on high setting for an additional 2 hours until hot and candy corn is mostly melted.

Reduce heat to the keep warm setting and ladle into mugs. Top with whipped cream and crushed up Butterfinger Candy Bars, if desired.