This bread is the best served warm but is also very good toasted.
Preheat oven to 350°F.
In a large mixing bowl, combine egg, buttermilk, oil and mustard. Mix well. In another bowl, mix flours, sugar, nuts, carrot, mustard seed, flax, poppy seed, baking powder, baking soda and salt.
Add dry ingredients to wet, mixing until well moistened.
Spray 9 inch x 5 inch loaf pan with non-stick cooking spray. Turn mixture into loaf pan and bake 50-60 minutes or until a toothpick inserted in centre comes out clean.
Cool 10 minutes before removing from pan. Cool slightly on rack, then slice into 16 slices.
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.