Brown Sugar Brownies
["1/4 c. butter or margarine", "1 c. light brown sugar", "1 egg", "1 c. flour (plain)", "1 tsp. baking powder", "1/2 tsp. salt", "1/2 tsp. vanilla", "1/2 c. chopped nuts (optional)"]
["Melt butter; cool.", "Stir in sugar and egg.", "Add dry ingredients, vanilla and nuts.", "Spread in greased and floured 8-inch square pan.", "Bake for 20 to 25 minutes at 350\u00b0.", "Cut into bars while warm."]
["butter", "light brown sugar", "egg", "flour", "baking powder", "salt", "vanilla", "nuts"]