I'm enjoying my homemade pumpkin "latte" right now. My recipe: 3 cups of milk, 3 T pumpkin puree, 1 t or so of baking spice (just picked up Tues at a local spice shop and it is yummy!), sugar to taste and instant coffee. Simmer on stovetop to let the flavors meld. This is a generous batch with enough for a friend.
I find using instant makes it creamier while still nofat--no water to dilute it. I sort of just made it up so the measurements may be a wee bit off. Luckily, it's easy to tinker with to get it to taste right.