Made this last week.. Turn out very well thought I'd post it:
Due for an edit and bumping!
PH did you end up trying it?

The ingredients
3 lbs. Sweet potato
1 1/2 cups sugar. ( a relatively small cup)
1 can evaporated milk.
2 eggs.
1 1/2 tsp nutmeg.
1 tsp vanilla.
3 table spoons of Margarine
1 tea spoon of cinnamon.
Pre-heat your oven to 400°F. Boil the Potatoes with the skin on until a fork or butter knife causes the
potaotes to easily break apart when inserted. Cool potatoes slightly.
Then place in a colander and run cold water over them to assist you with removing the skins since the
potatoes will still be pretty hot. Beat potatoes with mixer on medium speed, stopping frequently to remove
strings from the beaters. Once the strings are removed, add butter and continue to mix. Then add
remaining ingredients. You may need to adjust the nutmeg and sugar to your tastes. Continue mixing
your batter until it has a nice smooth consistency. The batter should not be thin or runny, and it should
not be too thick either. If too thick, try adding a little more evaporated milk (by the tablespoon) until the
batter is smooth. Pour your batter into your favourite unbaked 9 or 10-inch pie shell, sprinkle a dash of
cinnamon on the top and bake for 50 minutes to 1 hour. (Tip: Brush the edges of your pie shell with ice
water to prevent it from burning before the pie is actually done). Brown specs on the top of the pie are an
indication that your pie is done. You can also insert a knife in the middle of the pie, and if it comes out
clean it's done! Let cool for at least 1 hour before cutting and serving. Can be served slightly warmed by
itself, or place a large scoop of vanilla ice cream on top of a slice.