Combine first 8 ingredients (brown sugar to vanilla) in a large bowl; stir well.Combine flours, soda, cinnamon and salt.Stir into brown sugar mixture.
Pour into a 13 x 9 inch pan coated with cooking spray.
Bake at 350* for 30 minutes or until a wooden pick inserted in center comes out clean.Let cool completely in pan on a wire rack.Spread with frosting.Cover and chill.Cut into squares to serve.
Frosting Directions:Process cottage cheese in a food processor until smooth (3 to 5 minutes).Add cream cheese, vanilla, and orange rind; process until smooth.Add powdered sugar; pulse 3 to 5 times or until smooth.Yield: 1 1/2 cups.
213 calories per serving.Exchanges:2 starch, 1 fat.