1/2 c. butter
1 c. sugar
1 tsp. vanilla
2 eggs
1/2 c. flour
1/3 c. cocoa
1/4 tsp. baking powder
1/4 tsp. salt
1/2 c. walnuts

Blend butter, sugar and vanilla. Add eggs and beat well with spoon. Combine flour, cocoa, baking powder and salt. Add to egg mixture until well blended. Stir in nuts. Spread in greased 9-inch square pan.

Bake at 350°F for 20 to 25 minutes. Cool in pan.