Step 1

Add half of the heavy cream to the slow cooker. Whisk in the cocoa powder until combined, this might take a while.

Step 2

Add the remaining cream, milk, sweetened condensed milk, chopped chocolate, and vanilla, stir to combine.

Step 3

Place on low for 3 hours, stirring every 20 minutes or so until the chocolate is melted and fully combined. Keep on the warm setting for up to 3 hours for serving. If the hot chocolate gets too thick while it sits, you can stir in more milk to your desired thickness.

Step 4

Serve with your desired toppings such as marshmallows, whipped cream, chocolate syrup, or crushed candy canes!