Preheat oven to 325 degrees F. Coat a 9-inch pie plate with cooking spray; set aside.Advertisement
In a large bowl, combine egg, egg whites, brown sugar and 1 teaspoon vanilla. Beat with an electric mixer on medium speed about 1 minute or until smooth. In a small bowl, stir together flour, baking soda and salt. Add flour mixture to egg mixture; stir just until combined. Fold in apples and nuts. Spread batter evenly in the prepared pie plate.
Bake for 25 to 30 minutes or until center is set. Cool slightly on a wire rack. Meanwhile, for topping: In a small bowl, whisk together sour cream, yogurt and 1/2 teaspoon vanilla.
To serve, cut dessert into wedges. Serve warm. Spoon about 1 rounded tablespoon of the topping over each serving.
Tip: If using a sugar substitute, we recommend Splenda(R) Brown Sugar Blend. Follow package directions to use product amount equivalent to 2/3 cup brown sugar. Nutrition Facts Per Serving with Substitute: Same as below, except 155 calories, 18 g carb., 190 sodium
2 other carbohydrate, 1 fat