Evaporated milk would be the best choice for those counting calories or watching their weight. However, remember that heavy cream gives pumpkin pie the creamiest and richest filling. I have tested many ways to make pumpkin pie and found that the best one is heavy cream because it has the most milk fat. The fat content of heavy cream is between 36 and 40 grams, while evaporated milk only has about seven or eight grams.