Carrot-Raisin Brownies
["1 1/2 c. unsifted all-purpose flour", "1/2 tsp. salt", "1/2 tsp. baking soda", "1/2 tsp. baking powder", "1/2 c. butter or margarine, softened", "1 c. firmly packed light brown sugar", "2 eggs", "1 tsp. vanilla", "1/2 c. chopped raisins", "1 1/4 c. finely grated carrots", "1/2 c. firmly chopped walnuts"]
["Mix flour with salt, soda and baking powder.", "Cream butter. Gradually beat in sugar.", "Add eggs and vanilla; beat until well blended.", "Stir in dry ingredients.", "Add raisins and carrots."]
["flour", "salt", "baking soda", "baking powder", "butter", "brown sugar", "eggs", "vanilla", "raisins", "carrots", "walnuts"]