1/2 cup butter or margarine 1 cup sugar 2 eggs 1 cup sour cream 2 cups flour 1/2 tsp baking soda 1 1/2 tsp baking powder 1 tsp vanilla combine butter & sugar, add eggs, add sour cream, add dry ingredients bake 50 min at 350F streusel: 1/2 cup brown sugar 2 TBS flour 2 tsp cinnamon 2 TBS butter, melted 1/2 cup chopped nuts combine all ingredients pour 1/2 batter, then 1/2 struesel rest batter then rest of struesel