Heat oven to 350 degrees F. Spray a large baking sheet with cooking spray or line with parchment paper. In a medium bowl, beat brown sugar, canola oil, egg whites and vanilla together with a hand mixer or stand mixer. Add peanut butter, applesauce and ginger; beat until smooth. In a large bowl, combine whole wheat flour, oats, bran flakes, cinnamon, baking soda, and salt. Make a well in the center of dry ingredients and pour in egg mixture. Mix wet ingredients into dry ingredients until batter is incorporated. Do not over mix. Make into 2-inch dough balls and place on cookie sheet at least an inch apart; flatten with bottom of glass or measuring cup. Bake 8-10 minutes or until slightly golden on bottom.
Tip: Store in an air tight container.