Combine applesauce and egg in a mixing bowl; stir well. Combine 1 cup all-purpose flour, whole wheat flour, soda, sugar, and salt; add to applesauce mixture, stirring just until dry ingredients are moistened.
Dredge raisins in remaining 1 tablespoon all-purpose flour. Add raisins and shortening to batter, stirring just until blended
Spoon batter into greased muffin pans, filling two-thirds full. Bake at 400° for 25 minutes or until golden brown.