Yes! This is a great option for when you're planning to make large amounts of this hot chocolate with cinnamon to serve a crowd, like at a holiday party. Just blend everything together before adding to the Crock Pot. Then, set it to cook on low for 4-6 hours or high for 2 hours. Or, cook it as instructed, then transfer to a slow cooker to keep warm for serving. Nothing really needs to cook in this recipe; the ingredients just need to be warmed and incorporated with one another.