Congo Squares
["1 box light brown sugar", "1 1/2 sticks margarine, melted", "3 eggs", "2 3/4 c. self-rising flour", "1 tsp. vanilla", "1 (12 oz.) pkg. chocolate chips", "1 c. chopped nuts"]
["Mix all together (adding nuts and chips last).", "Batter will be very stiff.", "Spread in an 11 x 17-inch greased pan and bake at 350\u00b0 for 20 minutes.", "Cool and cut in squares."]
["light brown sugar", "margarine", "eggs", "flour", "vanilla", "chocolate chips", "nuts"]