Chocolate Pecan Brownies
["1/2 c. butter or margarine", "2 (1 oz.) sq. unsweetened chocolate", "1 c. sugar", "1/2 c. all-purpose flour", "1 tsp. baking powder", "2 eggs", "1 tsp. vanilla extract", "1 c. chopped pecans"]
["Combine butter and chocolate in top of double boiler; bring water to boil.", "Reduce heat to low and cook until the chocolate melts."]
["butter", "unsweetened chocolate", "sugar", "all-purpose", "baking powder", "eggs", "vanilla extract", "pecans"]