This recipe came from Food TV's, Paula's Home Cooking and are they good! Paula also had a maple icing with pecans but I like'd them better plain. These freeze well and stay moist for several days. A keeper! Thanks, Paula! =)
In a medium bowl, combine flour, sugar, baking powder, baking soda, cinnamon, and salt.
In a large bowl, combine eggs, sour cream, and sweet potato.
Gradually add flour mixture, stirring to combine.
Turn dough out onto a heavily floured surface.
Knead in flour with hands as needed (dough will be sticky).
Roll out dough to 1/2-inch thickness.
Cut out dough with a 2 1/4-inch round doughnut cutter.
No doughnut cutter? Use a soup can as a cutter then poke a hole in the middle of the dough round.
Using your fingers, stretch the dough until an inch opening is formed and the doughnut is about 3 " wide.
Re-roll dough as needed.
In a Dutch oven, heat vegetable oil over medium heat to 360 degrees F.
Cook doughnuts, in batches of 4-5, in hot oil, 2 minutes per side, or until lightly browned.
Drain on paper towels.
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