Preheat oven to 325 degrees
Spray bread loaf pan with non stick cooking spray
In large mixing bowl, combine whole wheat flour, all purpose flour, oats, brown sugar, oat/wheat bran, soda, baking powder and salt.
Blend in buttermilk and egg and mix until blended.
Add to loaf pan and smooth top.
Bake for 45 minutes.
Great toasted!