½  cup  Butter
 1  cup  Sugar
 2       Eggs
 2  cup  Flour
 2  tsp  Baking Powder
 2  tsp  Baking Soda
 ½  tsp  Salt
 1  cup  Sour cream
 1  tsp  Vanilla

Cream butter and sugar, then add eggs.

Add dry ingredients, sour cream and  vanilla.
 

FILLING & TOPPING:

 1  cup  Chopped Walnuts
 ½  cup  Sugar
 ¼  cup  Brown Sugar
 2  tsp  Cinnamon

Divide filling mixture - use half as filling, half as topping.

Pour batter into a greased and floured tube or spring form pan, ½ batter then ½ filling, then the remaining batter and filling.

Bake at 350° for 40 minutes or until done.