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

Cream butter, sugar, and eggs. Sift dry ingredients into creamed mixture. Add vanilla. Put half of batter into 9 x 9 inch pan. Sprinkle with mixture of 1/2 cup sugar, 1 teaspoon cinnamon, and nuts. Top with rest of batter and rest of topping. Swirl topping through cake with spatula. Bake at 325 degrees for 45 minutes.