Erna's Coffee Cake

1/2 lb margaine
1 cup sugar
2 eggs
2 cups flour
1 tsp baking soda
1 tsp baking powder
1 cup sour cream
1 tsp vanilla

Cream first 3 ingredients then add dry ingredients.  Add sour cream and vanilla.  Beat until smooth.  Pour 1/2 batter in greased bundt pan.  Sprinkle topping mixture over 1/2 batter in pan, then top with remaining batter.  Bake at 350 degrees for 40 mins.

Topping Mixture:
1/4 cup brown sugar
1 tsp cinnamon
1/2 cup chopped nuts.