Congo Bars
["2/3 c. butter", "1 lb. brown sugar", "3 eggs", "2 1/2 c. flour", "2 1/2 tsp. baking powder", "1/2 tsp. salt", "1 large pkg. chocolate chips (12 oz.)", "1/2 c. nuts, chopped", "1 tsp. vanilla"]
["Melt butter.", "Stir in sugar, eggs, vanilla and dry ingredients.", "Mix well.", "Add chocolate chips and nuts.", "Bake at 350\u00b0 for 25 minutes in a 13 x 9-inch or 14 x 11-inch greased pan."]
["butter", "brown sugar", "eggs", "flour", "baking powder", "salt", "chocolate chips", "nuts", "vanilla"]