Butterscotch Brownies
["1/4 c. butter, margarine, shortening or vegetable oil", "1 c. light brown sugar, packed", "1 egg", "3/4 c. all-purpose flour", "1 tsp. baking powder", "1/2 tsp. salt", "1/2 tsp. vanilla", "1/2 c. coarsely chopped walnuts"]
["Heat oven to 350\u00b0.", "If using butter, margarine or shortening, melt over low heat.", "Remove from heat; stir in sugar until blended.", "Cool.", "If using oil, just blend oil and sugar.", "Stir in egg.", "Measure flour by dipping method or by sifting.", "Stir flour, baking powder and salt together; blend in.", "Mix in vanilla and walnuts.", "Spread in well-greased square pan, 8 x 8 x 2-inch.", "Bake 25 minutes.", "Do not overbake!", "Cut in bars while warm.", "Makes 18 bars, about 2 1/2 x 1-inch."]
["butter", "light brown sugar", "egg", "all-purpose", "baking powder", "salt", "vanilla", "walnuts"]