Brownies
["2 sq. Baker's unsweetened chocolate", "1/3 c. butter", "2/3 c. unsifted all-purpose flour", "1/2 tsp. Calumet baking powder", "1/4 tsp. salt", "2 eggs", "1 c. sugar", "1 tsp. vanilla", "1/2 c. 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\u00b0 for 25 minutes.", "Cool. Cut into 20 brownies."]
["chocolate", "butter", "flour", "baking powder", "salt", "eggs", "sugar", "vanilla", "nuts"]