TOPPING:

1 c. chopped walnuts or pecans
1/4 c. melted butter
1/4 c. white sugar
1/3 c. brown sugar
1 tsp. cinnamon

Combine all ingredients, mix well and set aside.

CAKE:

2 c. sifted flour
1 tsp. baking powder
1 tsp. baking soda
1/2 tsp. salt
2 eggs
1/2 c. soft shortening
1 c. sugar - white
1 tsp. vanilla extract
1 c. sour cream

Heat oven to 350 degrees. Grease 9 inch springform pan well. Sift flour, baking powder, baking soda, and salt together in separate bowl. Mix eggs, shortening, sugar and vanilla with electric mixer until smooth. Reduce speed and gradually add half flour mixture and half sour cream.

Blend until smooth then repeat with remaining mixture and sour cream. Put half cake batter into prepared pan, top with half topping mix, spreading evenly as possible. Repeat with remaining batter and topping. Bake 45-55 minutes or until toothpick comes out clean. Cool 10 minutes before removing from pan.