Step #2 in a seperate bowl mix egg, buttermilk & margarine together.
Step #3 stir in theto flour mixture slowly, do not beat!
add blueberries, stirring only to mix, just until moistened, do not beat!
bake in muffin c for 20 mins at 350F.
Step #4 optional: brush melted margarine over hot muffins & sprinkle with sugar immediatly out of the oven.
Step #5 also, a pinch of grated lemon or orange peel is great in the batter.