350° oven  Cake Mix  ½ cup applesauce  3/4 cup brown sugar  2 large eggs  1 ½ tsp. vanilla  1 ¼ cup whole wheat flour  ¼ cup bran  2 tsp baking powder  ¼ tsp salt  1 cup Greek yogurt  ¼ cup skim milk  Crumb Topping  ½ cup whole wheat flour  1/3 cup brown sugar   1/3…