Brownies

1/2 cup butter

1 cup sugar

2 eggs

1/3 cup baking cocoa

1/2 cup all purpose flour

1/4 teaspoon salt

1/2 cup chopped nuts

1/2 teaspoon vanilla

Measure margarine into mixing bowl. Let stand at room temperature until softened. Add sugar and blend thoroughly. Stir in eggs, beat until fluffy. Add cocoa sifted with flour and salt. Stir in nuts and vanilla. Spread in a square 9 inch or rectangular 8 by 10 inch pan rubbed lightly with margarine and dusted with flour. bake in a moderate over (350 degrees) about 25 minutes. Cut into squares and remove from pan while warm.