CAKE:

3 c. sifted flour
1/2 lb. (1 c.) butter
2 c. sugar
3 eggs
2 tsp. baking powder
2 tsp. baking soda
1/2 tsp. salt
1 tsp. vanilla
1 pt. sour cream

TOPPING:

1/2 c. sugar
2 tbsp. cinnamon
1 c. chopped nuts (pecans or walnuts)

Cream butter, sugar, eggs and vanilla. In separate bowl sift dry ingredients. Add alternately with sour cream to creamed mixture. Pour 1/2 of batter into greased 9 x 13 pan and sprinkle 1/2 topping over it. Add rest of batter, then cover with rest of topping.

Bake at 325 degrees, 45 minutes to 1 hour.