How to Make It
Place cinnamon sticks, ginger, and cloves in a 3- to 4-quart slow cooker.
Whisk together cocoa and ½ cup of the milk in a small bowl until smooth. In the slow cooker, whisk together cocoa mixture, half-and-half, powdered sugar, molasses, nutmeg, vanilla, salt, and remaining 3&frac 1/2 cups milk. Cover and cook on LOW 2½ to 3 hours; strain. Serve hot chocolate with marshmallows, whipped cream, and cinnamon.