Butterscotch Fudge Bars
["1/2 c. butter", "1 (1 oz.) envelope premelted unsweetened chocolate", "1 1/2 c. flour", "1/2 tsp. soda", "2 c. firmly packed brown sugar", "2 eggs", "1 tsp. vanilla", "3/4 c. chopped walnuts", "confectioners sugar"]
["In large saucepan, melt butter and chocolate over low heat. Remove from heat.", "Add remaining ingredients except confectioners sugar.", "Blend well.", "Spread in greased 13 x 9-inch pan.", "Bake at 350\u00b0 for 25 to 30 minutes.", "Cool; sprinkle with confectioners sugar.", "Cut into squares.", "Makes 36 bars."]
["butter", "chocolate", "flour", "soda", "brown sugar", "eggs", "vanilla", "walnuts", "confectioners sugar"]