What is a good substitute for condensed milk in a pumpkin pie for a lactose intolerant person?

Just read this - how timely! How much apple butter would you use for one pie - using 16oz of pumpkin? Thank you!

Apple butter adds richness without the dairy. I also have that problem!

I read around about best pumpkin pie recipes on Chow recently and most agreed that a REAL pumpkin pie, whatever that means, actually uses heavy cream.

My husband is allergic to dairy and I use soymilk to substitute in my normal pumpkin pie recipe. Cream of coconut (the sweetened stuff) is a good direct substitute for condensed milk and would probably be the best choice.