Thanksgiving wouldn't be the same without a slice of pumpkin pie. In fact I just finished making one for my daughter's class pie party, and the aroma in my kitchen is simply divine. The problem with pumpkin pie is the fat and calories, especially coming after a big Thanksgiving dinner. According to CalorieCount.com, a slice of pumpkin pie is worth about 316 calories with 130 of them from fat -- and that's without a dollop of cream on top. If you would like to slim down your homemade pie, here are some great ways to lower the fat in pumpkin pie.