1 c. butter, softened
2 c. sugar
2 eggs
1 c. cold mashed potatoes
1 tsp. vanilla
2 c. all-purpose flour
1/4 c. cocoa
1 tsp. baking soda
1 c. milk
1 c. chopped nuts

In a mixing bowl, cream butter and sugar until fluffy. Add eggs, one at a time, beating well after each addition. Blend in potatoes and vanilla. Combine flour, cocoa and baking soda; add alternately with milk, blending well after each addition. Stir in nuts. Pour into a greased 9x13x2 inch baking pan. Bake at 350 degrees for 40-45 minutes or until cake tests done. Cool on a wire rack. Serve with a dollop of whipped cream on top of each piece.