1 c. butter
2 c. sugar
2 eggs
1 c. sour cream
1/2 tsp. vanilla
1 3/4 c. flour
1/2 tsp. baking powder
1/4 tsp. salt

TOPPING:

1 c. chopped nuts
1 tsp. cinnamon
4 tsp. brown sugar

Cream together butter, sugar and eggs. Fold in all the rest of ingredients. Spoon 1/2 batter into greased cake pan (13 x 9 inches). Cover with half of topping, repeat. Bake at 350 degrees for 50 minutes. Cool almost completely before removing from pan.