Congo Squares
["1/3 c. melted margarine", "1 box brown sugar", "4 eggs, unbeaten", "3 c. flour", "3 tsp. baking powder", "1/2 tsp. salt", "1 pkg. chocolate chips", "1 tsp. vanilla", "1 c. nuts"]
["Cream together margarine and brown sugar.", "Add eggs and mix well.", "Sift together and add flour, baking powder and salt.", "Add chocolate chips, vanilla and nuts.", "Spread on greased cookie sheet and bake about 20 minutes at 375\u00b0.", "Cut into squares when cool."]
["margarine", "brown sugar", "eggs", "flour", "baking powder", "salt", "chocolate chips", "vanilla", "nuts"]