Combine egg, buttermilk and oil. Mix together all dry ingredients and add to buttermilk mixture just until blended.
Carefully stir in blueberries. Spoon into greased (or paper lined) muffin tins 2/3 full. Bake at 400° for 20-25 minutes.
Makes 12-15 muffins.
*Freeze local berries now for use during the winter.