1Preheat oven to 350^.Spray 2 large loaf pans with non stick spray. (9x5-inch). Set aside.
In a large mixer bowl cream the shortening and sugars on medium speed; add eggs and sweet potatoes.Mix on low until blended.
Combine dry ingredients and gradually add to potato mixture, alternating with the milk, ending with the dry ingredient. Mix until blended. Pour mixture equally into the prepared pans.
2Bake for 55-60 minutes or until tested done with a tooth pick inserted in the center comes out clean.
Cool on wire rack in loaf pan for 5 minutes. Loosen around inside of pan, turn out onto wire rack to cool.
Beat all ingredients together by hand until creamy. Drizzle over loaves and let dry a little.