1/2 c. butter
2 eggs
3 tsp. baking powder
1 tsp. vanilla
1 c. sugar
2 c. flour
1 tsp. baking soda
1 c. sour cream

TOPPING:

1/2 c. brown sugar
1 tsp. cinnamon
3 tsp. butter
3/4 c. chopped walnuts
1/4 c. flour

Cream butter, sugar, and eggs together. Add the rest of the ingredients. Put half of the batter in greased and floured tube pan. Put half of the topping over the batter. Place the rest of the batter over the topping. Then, place the rest of the topping on top.