3/4 c. butter
1 1/2 c. sugar
4 eggs
3 c. sifted flour
1 1/2 tsp. baking powder
1 1/2 tsp. baking soda
2 c. sour cream
1 1/2 tsp. vanilla

Have butter at room temperature; cream with the sugar. Add eggs one at a time, beating well after each addition. Re-sift flour along with the baking powder, and baking soda. Add the dry ingredients alternately with sour cream and vanilla beginning and ending with flour mixture. Spread 1/3 of the batter in a greased bundt or 10 inch tube pan. Top cake mixture with 1/2 of the filling. Repeat; spread remaining batter over all.

FILLING:

1 c. ground nuts
1/2 c. brown sugar
2 tbsp. flour
1 tsp. cinnamon

Mix together nuts, sugar, flour and cinnamon.

Bake at 350 degrees on lowest oven shelf for about 1 hour or until toothpick inserted in cake comes out clean. Make sure cake is cooled completely before taking out of pan. Before serving, dust with confectioners' sugar.