French Marble Cake (Helen Mellion)

INGREDIENTS

Combine and set aside:
1 cup ground walnuts
3 squares grated bitter chocolate
1 tsp cinnamon
1/2 cup sugar

Batter:
1/2 lb butter
1 1/2 cups sugar
5 eggs
3 cups flour
2 tsp baking powder
1 tsp baking soda
1 pint sour cream
1 tsp vanilla

DIRECTIONS

Cream butter and sugar. Add eggs, beating well. Sift the dry ingredients and add alternately with the sour cream. Add vanilla. Pour into greased and floured tube pan and marble with nut mixture. Bake 60 minutes at 35 degrees.