2 squares Baker's unsweetened chocolate
1/2 cup butter or margarine
2/3 cup unsifted flour
1/2 teaspoon baking powder
1/4 teaspoon salt
3 eggs
1 cup sugar
1 teaspoon vanilla
1/2 cup chopped nuts
Melt chocolate and butter. Mix flour with baking powder and salt. Beat eggs well; gradually beat in sugar. Blend in chocolate and vanilla. Mix in flour mixture. Add nuts. Spread in greased 8-inch square pan. Bake at 350 for 25 minutes. Cool. Cut into 20 brownies.