Slow Cooker Hot Chocolate

INGREDIENTS

1 1/2 qt

(litres) milk, ((full cream or 2%))

24 oz

evaporated milk, ((or 2 cups heavy cream))

6 oz

semi-sweet chocolate chips

1/2 cup

unsweetened cocoa powder

1/2 cup

white granulated sugar

coarse salt ((optional))

1 tbsp

pure vanilla extract

1 cup

marshmallows ((optional))