Pre-heat oven to 350-F degrees and prepare regular size
muffin tins with a light spray of non-stick cooking oil, or use cupcake papers.
In a mixing bowl, cream buttermilk, butter or oil, vanilla, banana, and sugar. Add the rest of the ingredients, and blend until just moistened.
Divide batter equally among muffin cups, approximately 2/3 full, more or less.
Bake for about 20 minutes or until a toothpick can be cleanly removed from the center of a muffin.