Butterscotch Brownies
["1/4 c. melted butter", "1 c. dark brown sugar", "1 egg", "1/4 tsp. salt", "3/4 c. flour", "1 tsp. baking powder", "1/2 tsp. vanilla", "1/2 c. chopped nuts"]
["Mix all ingredients and spread in a buttered 8 x 8-inch pan. Bake at 350\u00b0 for 25 minutes.", "Recipe may be doubled and baked in a 9 x 13-inch pan.", "Light brown sugar may be substituted for dark brown sugar."]
["butter", "brown sugar", "egg", "salt", "flour", "baking powder", "vanilla", "nuts"]