Sweet Potato Muffins

Ingredients
1-1/2 cups all-purpose flour
1 cup plus 1 tablespoon sugar, divided
3 teaspoons baking powder
3 teaspoons grated orange peel
1-1/2 teaspoons ground ginger
1 teaspoon baking soda
1/4 teaspoon salt
2 eggs, lightly beaten
1 cup cold mashed sweet potatoes (prepared without milk or butter)
1/4 teaspoon ground cinnamon

GINGER BUTTER:
1/2 cup butter, softened
2 tablespoons finely chopped crystallized ginger

Directions
In a large bowl, combine the flour, 1 cup sugar, baking powder, orange peel, ginger, baking soda and salt. Combine eggs and sweet potatoes; stir into dry ingredients just until moistened. 

Fill greased or paper-lined muffin cups two-thirds full. Combine cinnamon and remaining sugar; sprinkle over batter. Bake at 400F for 18-22 minutes or until a toothpick comes out clean. Cool for 5 minutes before removing from pans to wire racks. In a small bowl, combine the ginger butter ingredients. Serve with warm muffins. Yield: 1 dozen.
 
Source:  Taste of Home