3/4 cup powdered sugar
1/4 cup unsweetened cocoa powder
1/2 tsp cinnamon
1/4 tsp salt
2 cups milk
6 cups brewed coffee
2 tbsp semisweet chocolate chips
1 tsp vanilla extract
In a 5 or 6-quart slow cooker or crock pot, whisk together the sugar, cocoa, cinnamon, and salt until smooth. Whisk in milk until blended. Stir in coffee, chocolate chips, and vanilla. Cover and cook until hot and flavors are blended, 1 to 2 hours on high or 2 to 4 hours on low. Ladle into mugs to serve.
Note: May be kept warm on the keep warm setting during a party or winter evening.