If you skip the glaze, just spray the muffin tins with cooking spray or line with paper liners.
Combine flour, bran, milk powder, baking powder, baking soda, and salt. Stir well and set aside.
Mix together brown sugar, dark corn syrup, molasses, oil and egg in separate bowl until well blended.
Puree raisins and orange zest with water in blender or food processor. Add to liquid ingredients.
Stir liquid ingredients into dry ingredients until just moistened.
To make the glaze, melt the butter or shortening in a small bowl and stir in the sugar, brown sugar, corn syrup. and water. Spray 12 parchment muffin liners with cooking spray (or skip the liners) and use a pastry brush to brush the glaze over the bottom and up sides of the liners (or cups).
Fill muffin tins ⅔ full (Do not overfill!) and bake at 350 degrees for 20 minutes or until toothpick inserted comes out clean. You may need to go up to 25 minutes.
Immediately invert onto foil or wax paper to cool.