Mash sweet potatoes and set aside. Blend Bisquick and brown sugar with hands until mixture is caramel in color. Using spatula, slowly add sweet potatoes. Mix until thoroughly blended.
Drop by tablespoons onto prepared baking sheet. Top each biscuit with tablespoon of brown sugar. (Or, to make pretty biscuits, turn dough out onto a floured surface, and roll or pat out to 1/2 inch thickness. Cut into circles using a fancy-edge biscuit cutter. Place biscuits 1 inch apart onto a greased baking sheet; top with tablespoon of brown sugar.) Cook 15-20 minutes, or until done. Best served warm.
Slice biscuits and place several pieces of shaved ham and sliced cheddar cheese. Serve and enjoy!!!