Butterscotch Brownies
["1/4 c. oil", "1 c. light brown sugar, firmly packed", "1 egg, slightly beaten", "3/4 c. flour", "1 tsp. baking powder", "1/2 tsp. vanilla", "1/2 c. coarsely chopped walnuts"]
["Blend oil and sugar.", "Stir in beaten egg.", "Sift flour and baking powder together and combine with egg mixture.", "Add vanilla and walnuts to the batter.", "Spread in an oiled 8 x 8 x 2-inch pan and bake at 350\u00b0 for 25 minutes.", "Do not overbake.", "Cool slightly. Cut into squares."]
["oil", "light brown sugar", "egg", "flour", "baking powder", "vanilla", "walnuts"]