In your crock pot, combine the milk and coffee.Whip together the pumpkin, vanilla, sugar and cinnamon and pour into the crockpot.Mix together well.Toss in 3-4 cinnamon sticks.Cover the crockpot, and cook on high for 2 hours.*If you don't have a large group, you could easily halve the recipe.**I've been told that heating up the leftovers doesn't work so well