In medium bowl stir together wheat bran, ground flax seeds and hot water. Set aside.
In medium bowl whisk together oil and eggs. Add buttermilk, molasses, sugar, and vanilla. Whisk well. Stir in the wheat bran, flax seed, & water mixture. Set aside.
In a large bowl, stir together the whole wheat flour, barley flour, baking powder, and salt.
Add the wet ingredients into the dry ingredients and stir until just combined (don’t over stir).
Gently fold in the raisins.
Grease muffin tins or use muffin liners.
Fill the muffin tins ⅔ to ¾ full.
Bake for 22-25 minutes or until a toothpick inserted into the centre comes out clean