Toffee Bars
["1 c. margarine", "2 c. flour", "1 c. brown sugar", "1 tsp. vanilla", "1/4 tsp. salt"]
["Pat in cake pan.", "Bake at 350\u00b0 for 25 to 30 minutes or until golden.", "Melt chocolate chips over top."]
["margarine", "flour", "brown sugar", "vanilla", "salt"]