i am having similar issues as well. My mixture seemed way too loose/watery. I did sub one cup evaporated milk for the heavy cream because that was what I had on hand. I ended up adding more canned pumpkin than the recipe called for to thicken the mixture up a bit. Pies are in the oven now and it does seem that I will need to cook them longer than the recipe suggests.. And yes, I said pies because once I added more pumpkin I had enough for 2 pies.