01 -
Pour heavy cream and whole milk into the crockpot, then add semi-sweet and white chocolate chips directly into the mixture.
02 -
Stir in vanilla extract and powdered sugar until well incorporated with the liquids and chocolate.
03 -
Cover the crockpot and cook on low for 2 hours, stirring every 30 minutes to ensure even melting and blending.
04 -
Once the hot chocolate is hot and fully melted, stir thoroughly, then ladle into mugs and top with marshmallows or whipped cream as desired.