Pre-heat oven to 350 degrees Fahrenheit; spray a 9 x 9 inch glass pan with non-stick cooking spray
In a separate bowl whisk together egg whites until they foam; mix in sugar; mix in butter and applesauce; add vanilla, salt, baking powder; add flour and stir well (mixture will be thin)
Bake at 350 degrees Fahrenheit for 28 – 32 minutes or until crispy and golden brown
Bars do have a softer consistency and aren't super crunchy.