Mix egg, sugar and 1/2 of the buttermilk. Add baking soda to 2nd half of buttermilk, let sit for 5 mins then add to first mixture. Add cardamon to flour. Add buttermilk and melted margarine to the flour and mix well. Add blueberries. Spray a medium bundt pan. Gently put cake/blueberry mixture in pan and bake at 350 degrees for about 35 mins or until toothpick comes clean. Cool on rack for 5 mins before removing from pan.
Originally called for raisins instead of blueberries. The bundt pan I use is not as big as the ones currently on the market. Can also be made in a loaf pan Source Inge Sorenson Formatted for Mastercook by Carol Floyd--c.floyd@arnprior.com