1 c. butter (2 sticks)
2 c. sugar
2 eggs
1/2 pt. sour cream (1 c.)
1/2 tsp. vanilla
1 tsp. baking powder
2 c. sifted cake flour
1/4 tsp. salt

CRUMB MIXTURE:

4 tbsp. brown sugar
1 tsp. cinnamon
1 c. chopped pecans or walnuts

Cream butter; mix in sugar. Beat until light, beat in eggs. Fold in sour cream and vanilla. Then fold in cake flour mixed with salt and baking powder. Pour 1/2 of batter into buttered 10" bundt cake pan, then 1/2 crumb, then remaining batter. Top with remaining crumb mixture. Bake at 350 degrees for 55 to 60 minutes. When finished, sprinkle with powdered sugar while warm.