01 -
Lightly coat the interior of the slow cooker with nonstick spray or rub a small amount of butter to prevent sticking.
02 -
In a medium bowl, whisk together the cocoa powder, granulated sugar, and salt to eliminate lumps and ensure even distribution.
03 -
Pour the whole milk, heavy cream, and maraschino cherry syrup into the slow cooker. Add the whisked dry ingredients, vanilla extract, and semi-sweet chocolate chips. Whisk thoroughly until the mixture is mostly dissolved.
04 -
Set the slow cooker to LOW heat and cook for approximately 2 hours, stirring every 30 to 45 minutes to facilitate even melting of chocolate chips.
05 -
Taste and modify sweetness or cherry intensity if desired. If the hot chocolate is too thick, whisk in a small splash of milk to adjust consistency.
06 -
Ladle the hot chocolate into mugs. Top with optional whipped cream, maraschino cherries, chocolate shavings, and marshmallows to enhance presentation and flavor.