Butterscotch Bars
["1/2 c. butter (not margarine)", "2 c. packed brown sugar", "2 eggs", "1 c. flour", "2 tsp. baking powder", "1/4 tsp. salt", "2 tsp. vanilla", "1 c. chopped nuts"]
["Melt butter.", "Stir into brown sugar until blended.", "Cool.", "Add eggs.", "Sift dry ingredients together and add to butter, sugar and egg mixture.", "Add vanilla and nuts.", "Pour into greased 9 x 13-inch pan.", "Bake at 350\u00b0 for 30 minutes.", "Cut while warm."]
["butter", "brown sugar", "eggs", "flour", "baking powder", "salt", "vanilla", "nuts"]