Mix first four ingredients until crumbly. Set aside 1/2 cup of this mixture for topping. Add baking powder, soda and spices to remaining crumbly mixture. Combine thoroughly. Then stir in well-beaten eggs and sour milk. Be careful not to over-beat. pour into large pan, spreading fairly thin. Sprinkle the reserved 1/2 cup of crumbly mixture and nuts over the top.
Bake in preheated electric oven at 375F for 25-30 minutes.