-
In a large bowl, combine all-purpose flour, whole wheat flour, baking powder, baking soda, and salt.
-
In another bowl, combine yogurt, eggs, milk and oil. Stir in sweet potatoes.
-
Add yogurt mixture to flour mixture and stir just until moistened. Spoon batter into lightly oiled loaf pan.
-
Bake in 375 F (190 C) preheated oven for about 60 minutes or until a toothpick inserted in center comes out clean. Cool in pan for 10 minutes, then remove from pan and cool completely.