Stir together flour, sugar, baking powder, baking soda, salt,
2
In large mixing bowl, combine cereal, milk, egg whites, oil, yogurt and lemon zest.
3
Let stand about 5 minutes or until cereal softens. Add flour mixture stirring only until combined. Spread evenly in a 8 x 8 x 2 inch pan coated with cooking spray.
4
Bake at 350 degrees F about 25 minutes or until wooden pick inserted in center comes out clean.
Cool and dust with powdered sugar before serving.