Silken Sweet Potato Pie

1 1/2 lbs sweet potatoes
8 oz silken tofu
1/2 cup brown sugar
2 T molasses
1/4 tsp cinnamon
1/8 tsp ginger
1/8 tsp cardamom
pinch salt
pinch nutmeg

bake crust
puree filling add to baked crust, return to off oven.