Toffee Bars
["24 saltine crackers, salted or unsalted", "2 sticks butter or margarine", "1 c. brown sugar", "1 tsp. vanilla", "1 (12 oz.) bag semi-sweet or milk chocolate chips"]
["Line a 13 x 9-inch pan with foil and spray with Pam.", "Arrange crackers in single layer, edges touching. Put butter and sugar in saucepan to boil."]
["crackers", "butter", "brown sugar", "vanilla", "semi-sweet"]