1. In small bowl, sift together flour and baking powder.
2. In large bowl, combine 1 cup apple sauce, yogurt, milk, brown sugar, honey, cinnamon, lemon juice and nutmeg.
3. In medium bowl, beat egg whites with electric mixer at high speed until soft peaks form.
4. Fold egg whites and flour mixture alternately into apple sauce mixture, beginning with egg whites, until well blended. Fold in pecans.
5. Spray waffle iron with nonstick cooking spray. For every two waffles, pour 1/2 cup batter into hot waffle iron. Spread with knife to cover waffle iron. Close lid and bake until steaming stops.* Top each waffle with scoop of frozen yogurt, additional apple sauce and raspberries, if desired.
*Check the manufacturer's directions for recommended amount of baking time.