Committed to eating more fiber, I plan to make a batch of these muffins each week and then to freeze most of them. Each night that I don't have fresh muffins, I will remove two muffins from the freezer and place them in a plastic tub to thaw overnight. The next day, I will eat the thawed muffins as a treat, not necessarily for breakfast.
Note that doubling the recipe would be a cinch.
Classic  Bran 
Muffins
Makes 12
1 cup buttermilk
1 egg
1⁄3 
cup vegetable oil
1⁄2 cup brown
sugar
3⁄4 teaspoon baking powder
3⁄4 
teaspoon baking soda
1⁄2 teaspoon salt
3⁄4 teaspoon vanilla extract
1⁄2 cup all-purpose flour
1⁄2 cup whole-wheat flour
1⁄2 cup raisins, shredded coconut, or chopped
walnuts or pecans
1.    In quart-sized
measuring cup, measure buttermilk. Add bran and stir. Let mixture stand for 10
minutes.
2.    In medium-large bowl,
beat egg.
3.           
  
3.  To beaten egg, add vegetable oil, brown sugar,
baking powder, baking soda, salt, and vanilla. Beat by hand until well-blended.
4.  Add bran mixture and stir well.
5.  Gently stir in all-purpose flour, whole-wheat
flour, and raisins, coconut, or nuts.
6.  Distribute batter among 12 greased or
paper-lined muffin tins.
7.  Bake
in 375°F. oven for about 18 minutes. Let muffins rest for a few minutes before serving.
     NOTE: These freeze well. Recipe tested at 6000 feet.
