Nana Chocolate Squares
["16 crushed graham crackers (2 c.)", "1 can condensed milk (Eagle Brand)", "6 to 8 oz. chocolate chips", "chopped nuts (if desired)", "1 tsp. vanilla", "dash of salt"]
["Mix by hand (batter will be extremely thick).", "Spread by hand into a greased 8-inch square pan.", "Bake at 375\u00b0 for 1/2 hour."]
["graham crackers", "condensed milk", "chocolate chips", "nuts", "vanilla", "salt"]